diff --git a/VST/AudioGroupFilePresenter.cpp b/VST/AudioGroupFilePresenter.cpp
new file mode 100644
index 0000000..3318ef9
--- /dev/null
+++ b/VST/AudioGroupFilePresenter.cpp
@@ -0,0 +1,310 @@
+#include "AudioGroupFilePresenter.hpp"
+#include "VSTBackend.hpp"
+
+namespace amuse
+{
+
+bool AudioGroupDataCollection::loadProj()
+{
+    std::wstring path = m_path + L"\\proj";
+    athena::io::FileReader r(path, 1024 * 32, false);
+    if (r.hasError())
+        return false;
+    std::vector<uint8_t>& ret = m_projData;
+    size_t len = r.length();
+    ret.resize(len);
+    r.readUBytesToBuf(ret.data(), len);
+    return ret.size() != 0;
+}
+
+bool AudioGroupDataCollection::loadPool()
+{
+    std::wstring path = m_path + L"\\pool";
+    athena::io::FileReader r(path, 1024 * 32, false);
+    if (r.hasError())
+        return false;
+    std::vector<uint8_t>& ret = m_poolData;
+    size_t len = r.length();
+    ret.resize(len);
+    r.readUBytesToBuf(ret.data(), len);
+    return ret.size() != 0;
+}
+
+bool AudioGroupDataCollection::loadSdir()
+{
+    std::wstring path = m_path + L"\\sdir";
+    athena::io::FileReader r(path, 1024 * 32, false);
+    if (r.hasError())
+        return false;
+    std::vector<uint8_t>& ret = m_sdirData;
+    size_t len = r.length();
+    ret.resize(len);
+    r.readUBytesToBuf(ret.data(), len);
+    return ret.size() != 0;
+}
+
+bool AudioGroupDataCollection::loadSamp()
+{
+    std::wstring path = m_path + L"\\samp";
+    athena::io::FileReader r(path, 1024 * 32, false);
+    if (r.hasError())
+        return false;
+    std::vector<uint8_t>& ret = m_sampData;
+    size_t len = r.length();
+    ret.resize(len);
+    r.readUBytesToBuf(ret.data(), len);
+    return ret.size() != 0;
+}
+
+bool AudioGroupDataCollection::loadMeta()
+{
+    std::wstring path = m_path + L"\\meta";
+    athena::io::FileReader r(path, 1024 * 32, false);
+    if (r.hasError())
+        return false;
+    std::experimental::optional<MetaData>& ret = m_metaData;
+    ret.emplace(r);
+    return ret.operator bool();
+}
+
+AudioGroupDataCollection::AudioGroupDataCollection(const std::wstring& path, const std::wstring& name)
+: m_path(path), m_name(name)
+{
+
+}
+
+bool AudioGroupDataCollection::_attemptLoad(AudioGroupFilePresenter& presenter)
+{
+    if (m_metaData && m_loadedData && m_loadedGroup)
+        return true;
+    if (!loadProj())
+        return false;
+    if (!loadPool())
+        return false;
+    if (!loadSdir())
+        return false;
+    if (!loadSamp())
+        return false;
+    if (!loadMeta())
+        return false;
+
+    return _indexData(presenter);
+}
+
+bool AudioGroupDataCollection::_indexData(AudioGroupFilePresenter& presenter)
+{
+    amuse::Engine& engine = presenter.getBackend().getAmuseEngine();
+
+    switch (m_metaData->fmt)
+    {
+        case amuse::DataFormat::GCN:
+        default:
+            m_loadedData.emplace(m_projData.data(), m_projData.size(),
+                                 m_poolData.data(), m_poolData.size(),
+                                 m_sdirData.data(), m_sdirData.size(),
+                                 m_sampData.data(), m_sampData.size(),
+                                 amuse::GCNDataTag{});
+            break;
+        case amuse::DataFormat::N64:
+            m_loadedData.emplace(m_projData.data(), m_projData.size(),
+                                 m_poolData.data(), m_poolData.size(),
+                                 m_sdirData.data(), m_sdirData.size(),
+                                 m_sampData.data(), m_sampData.size(),
+                                 m_metaData->absOffs, amuse::N64DataTag{});
+            break;
+        case amuse::DataFormat::PC:
+            m_loadedData.emplace(m_projData.data(), m_projData.size(),
+                                 m_poolData.data(), m_poolData.size(),
+                                 m_sdirData.data(), m_sdirData.size(),
+                                 m_sampData.data(), m_sampData.size(),
+                                 m_metaData->absOffs, amuse::PCDataTag{});
+            break;
+    }
+
+    m_loadedGroup = engine.addAudioGroup(*m_loadedData);
+    m_groupTokens.clear();
+    if (m_loadedGroup)
+    {
+        m_groupTokens.reserve(m_loadedGroup->getProj().songGroups().size() +
+                              m_loadedGroup->getProj().sfxGroups().size());
+
+        {
+            const auto& songGroups = m_loadedGroup->getProj().songGroups();
+            std::map<int, const amuse::SongGroupIndex*> sortGroups;
+            for (const auto& pair : songGroups)
+                sortGroups[pair.first] = &pair.second;
+            for (const auto& pair : sortGroups)
+                m_groupTokens.emplace_back(pair.first, pair.second);
+        }
+        {
+            const auto& sfxGroups = m_loadedGroup->getProj().sfxGroups();
+            std::map<int, const amuse::SFXGroupIndex*> sortGroups;
+            for (const auto& pair : sfxGroups)
+                sortGroups[pair.first] = &pair.second;
+            for (const auto& pair : sortGroups)
+                m_groupTokens.emplace_back(pair.first, pair.second);
+        }
+    }
+
+    return m_loadedData && m_loadedGroup;
+}
+
+AudioGroupCollection::AudioGroupCollection(const std::wstring& path, const std::wstring& name)
+: m_path(path), m_name(name)
+{
+
+}
+
+void AudioGroupCollection::addCollection(AudioGroupFilePresenter& presenter,
+                                         std::vector<std::pair<std::wstring, amuse::IntrusiveAudioGroupData>>&& collection)
+{
+    for (std::pair<std::wstring, amuse::IntrusiveAudioGroupData>& pair : collection)
+    {
+        std::wstring collectionPath = m_path + L'\\' + pair.first;
+
+        amuse::IntrusiveAudioGroupData& dataIn = pair.second;
+        auto search = m_groups.find(pair.first);
+        if (search == m_groups.end())
+        {
+            search = m_groups.emplace(pair.first,
+                                      std::make_unique<AudioGroupDataCollection>(collectionPath,
+                                                                                 pair.first)).first;
+        }
+
+        AudioGroupDataCollection& dataCollection = *search->second;
+        dataCollection.m_projData.resize(dataIn.getProjSize());
+        memmove(dataCollection.m_projData.data(), dataIn.getProj(), dataIn.getProjSize());
+
+        dataCollection.m_poolData.resize(dataIn.getPoolSize());
+        memmove(dataCollection.m_poolData.data(), dataIn.getPool(), dataIn.getPoolSize());
+
+        dataCollection.m_sdirData.resize(dataIn.getSdirSize());
+        memmove(dataCollection.m_sdirData.data(), dataIn.getSdir(), dataIn.getSdirSize());
+
+        dataCollection.m_sampData.resize(dataIn.getSampSize());
+        memmove(dataCollection.m_sampData.data(), dataIn.getSamp(), dataIn.getSampSize());
+
+        dataCollection.m_metaData.emplace(dataIn.getDataFormat(), dataIn.getAbsoluteProjOffsets(), true);
+        dataCollection._indexData(presenter);
+    }
+}
+
+void AudioGroupCollection::update(AudioGroupFilePresenter& presenter)
+{
+    std::wstring path = m_path + L"\\*";
+
+    WIN32_FIND_DATAW d;
+    HANDLE dir = FindFirstFileW(path.c_str(), &d);
+    if (dir == INVALID_HANDLE_VALUE)
+        return;
+    do
+    {
+        if (!wcscmp(d.cFileName, L".") || !wcscmp(d.cFileName, L".."))
+            continue;
+
+        if (d.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
+        {
+            std::wstring nameStr(d.cFileName);
+            auto search = m_groups.find(nameStr);
+            if (search == m_groups.end())
+            {
+                search =
+                m_groups.emplace(nameStr,
+                                 std::make_unique<AudioGroupDataCollection>(m_path + L'\\' + nameStr,
+                                                                            nameStr)).first;
+                search->second->_attemptLoad(presenter);
+            }
+        }
+    } while (FindNextFileW(dir, &d));
+
+    FindClose(dir);
+}
+
+void AudioGroupFilePresenter::update()
+{
+    std::wstring path = m_backend.getUserDir() + L"\\*";
+    std::map<std::wstring, std::unique_ptr<AudioGroupCollection>>& theMap = m_audioGroupCollections;
+
+    WIN32_FIND_DATAW d;
+    HANDLE dir = FindFirstFileW(path.c_str(), &d);
+    if (dir == INVALID_HANDLE_VALUE)
+        return;
+    do
+    {
+        if (!wcscmp(d.cFileName, L".") || !wcscmp(d.cFileName, L".."))
+            continue;
+
+        if (d.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
+        {
+            std::wstring nameStr(d.cFileName);
+            auto search = theMap.find(nameStr);
+            if (search == theMap.end())
+            {
+                search = theMap.emplace(nameStr,
+                    std::make_unique<AudioGroupCollection>(m_backend.getUserDir() + L'\\' + nameStr, nameStr)).first;
+                search->second->update(*this);
+            }
+        }
+    } while (FindNextFileW(dir, &d));
+
+    FindClose(dir);
+}
+
+void AudioGroupFilePresenter::addCollection(const std::wstring& name,
+     std::vector<std::pair<std::wstring, amuse::IntrusiveAudioGroupData>>&& collection)
+{
+    std::wstring path = m_backend.getUserDir() + L'\\' + name;
+    AudioGroupCollection& insert = *m_audioGroupCollections.emplace(name, std::make_unique<AudioGroupCollection>(path, name)).first->second;
+    insert.addCollection(*this, std::move(collection));
+
+    for (std::pair<const std::wstring, std::unique_ptr<AudioGroupDataCollection>>& pair : insert.m_groups)
+    {
+        std::wstring collectionPath = insert.m_path + L'\\' + pair.first;
+        CreateDirectory(collectionPath.c_str(), nullptr);
+
+        FILE* fp = _wfopen((collectionPath + L"\\proj").c_str(), L"wb");
+        if (fp)
+        {
+            fwrite(pair.second->m_projData.data(), 1, pair.second->m_projData.size(), fp);
+            fclose(fp);
+        }
+
+        fp = _wfopen((collectionPath + L"\\pool").c_str(), L"wb");
+        if (fp)
+        {
+            fwrite(pair.second->m_poolData.data(), 1, pair.second->m_poolData.size(), fp);
+            fclose(fp);
+        }
+
+        fp = _wfopen((collectionPath + L"\\sdir").c_str(), L"wb");
+        if (fp)
+        {
+            fwrite(pair.second->m_sdirData.data(), 1, pair.second->m_sdirData.size(), fp);
+            fclose(fp);
+        }
+
+        fp = _wfopen((collectionPath + L"\\samp").c_str(), L"wb");
+        if (fp)
+        {
+            fwrite(pair.second->m_sampData.data(), 1, pair.second->m_sampData.size(), fp);
+            fclose(fp);
+        }
+
+        fp = _wfopen((collectionPath + L"\\meta").c_str(), L"wb");
+        if (fp)
+        {
+            fwrite(&*pair.second->m_metaData, 1, sizeof(*pair.second->m_metaData), fp);
+            fclose(fp);
+        }
+    }
+}
+
+void AudioGroupFilePresenter::populateEditor(VSTEditor& editor)
+{
+    for (const auto& cgollection : m_audioGroupCollections)
+    {
+
+    }
+}
+
+}
diff --git a/VST/AudioGroupFilePresenter.hpp b/VST/AudioGroupFilePresenter.hpp
new file mode 100644
index 0000000..36251e7
--- /dev/null
+++ b/VST/AudioGroupFilePresenter.hpp
@@ -0,0 +1,92 @@
+#ifndef __AMUSE_AUDIOGROUPFILEPRESENTER_HPP__
+#define __AMUSE_AUDIOGROUPFILEPRESENTER_HPP__
+
+#include <map>
+#include <memory>
+#include "optional.hpp"
+#include <amuse/amuse.hpp>
+#include <athena/FileReader.hpp>
+
+namespace amuse
+{
+class VSTBackend;
+class VSTEditor;
+class AudioGroupFilePresenter;
+
+struct AudioGroupDataCollection
+{
+    std::wstring m_path;
+    std::wstring m_name;
+
+    std::vector<uint8_t> m_projData;
+    std::vector<uint8_t> m_poolData;
+    std::vector<uint8_t> m_sdirData;
+    std::vector<uint8_t> m_sampData;
+
+    struct MetaData
+    {
+        amuse::DataFormat fmt;
+        uint32_t absOffs;
+        uint32_t active;
+        MetaData(amuse::DataFormat fmtIn, uint32_t absOffsIn, uint32_t activeIn)
+        : fmt(fmtIn), absOffs(absOffsIn), active(activeIn) {}
+        MetaData(athena::io::FileReader& r)
+        : fmt(amuse::DataFormat(r.readUint32Little())), absOffs(r.readUint32Little()), active(r.readUint32Little()) {}
+    };
+    std::experimental::optional<MetaData> m_metaData;
+
+    std::experimental::optional<amuse::AudioGroupData> m_loadedData;
+    const amuse::AudioGroup* m_loadedGroup;
+    struct GroupToken
+    {
+        int m_groupId;
+        const amuse::SongGroupIndex* m_song = nullptr;
+        const amuse::SFXGroupIndex* m_sfx = nullptr;
+        GroupToken(int id, const amuse::SongGroupIndex* song) : m_groupId(id), m_song(song) {}
+        GroupToken(int id, const amuse::SFXGroupIndex* sfx) : m_groupId(id), m_sfx(sfx) {}
+    };
+    std::vector<GroupToken> m_groupTokens;
+
+    bool loadProj();
+    bool loadPool();
+    bool loadSdir();
+    bool loadSamp();
+    bool loadMeta();
+
+    AudioGroupDataCollection(const std::wstring& path, const std::wstring& name);
+    bool isDataComplete() const {return m_projData.size() && m_poolData.size() && m_sdirData.size() && m_sampData.size() && m_metaData;}
+    bool _attemptLoad(AudioGroupFilePresenter& presenter);
+    bool _indexData(AudioGroupFilePresenter& presenter);
+};
+
+struct AudioGroupCollection
+{
+    std::wstring m_path;
+    std::wstring m_name;
+
+    std::map<std::wstring, std::unique_ptr<AudioGroupDataCollection>> m_groups;
+
+    AudioGroupCollection(const std::wstring& path, const std::wstring& name);
+    void addCollection(AudioGroupFilePresenter& presenter,
+                       std::vector<std::pair<std::wstring, amuse::IntrusiveAudioGroupData>>&& collection);
+    void update(AudioGroupFilePresenter& presenter);
+
+    //void populate
+};
+
+class AudioGroupFilePresenter
+{
+    VSTBackend& m_backend;
+    std::map<std::wstring, std::unique_ptr<AudioGroupCollection>> m_audioGroupCollections;
+public:
+    AudioGroupFilePresenter(VSTBackend& backend) : m_backend(backend) {}
+    void update();
+    void populateEditor(VSTEditor& editor);
+    void addCollection(const std::wstring& name,
+                       std::vector<std::pair<std::wstring, amuse::IntrusiveAudioGroupData>>&& collection);
+    VSTBackend& getBackend() {return m_backend;}
+};
+
+}
+
+#endif // __AMUSE_AUDIOGROUPFILEPRESENTER_HPP__
diff --git a/VST/CMakeLists.txt b/VST/CMakeLists.txt
index 5bdfce1..621d858 100644
--- a/VST/CMakeLists.txt
+++ b/VST/CMakeLists.txt
@@ -7,10 +7,12 @@ if (WIN32 AND (EXISTS ${VST3_SDK_ROOT}))
   add_library(amuse-vst SHARED
               VSTBackend.hpp VSTBackend.cpp
               VSTEditor.hpp VSTEditor.cpp
+              AudioGroupFilePresenter.hpp AudioGroupFilePresenter.cpp
               ${VST2_DIR}/vstplugmain.cpp
               ${VST2_DIR}/audioeffect.cpp
-              ${VST2_DIR}/audioeffectx.cpp)
+              ${VST2_DIR}/audioeffectx.cpp
+              FileOpenDialog.hpp FileOpenDialog.cpp)
   target_link_libraries(amuse-vst amuse boo soxr ${ZLIB_LIBRARIES} ${BOO_SYS_LIBS}
-                                  Msimg32 logvisor athena-core)
+                                  Msimg32 Shlwapi logvisor athena-core)
   set_target_properties(amuse-vst PROPERTIES LINK_FLAGS "/EXPORT:VSTPluginMain")
 endif()
diff --git a/VST/FileOpenDialog.cpp b/VST/FileOpenDialog.cpp
new file mode 100644
index 0000000..557fff9
--- /dev/null
+++ b/VST/FileOpenDialog.cpp
@@ -0,0 +1,238 @@
+#include "FileOpenDialog.hpp"
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>      // For common windows data types and function headers
+#define STRICT_TYPED_ITEMIDS
+#include <objbase.h>      // For COM headers
+#include <shobjidl.h>     // for IFileDialogEvents and IFileDialogControlEvents
+#include <shlwapi.h>
+#include <knownfolders.h> // for KnownFolder APIs/datatypes/function headers
+#include <propvarutil.h>  // for PROPVAR-related functions
+#include <propkey.h>      // for the Property key APIs/datatypes
+#include <propidl.h>      // for the Property System APIs
+#include <strsafe.h>      // for StringCchPrintfW
+#include <shtypes.h>      // for COMDLG_FILTERSPEC
+#include <new>
+
+// Controls
+#define CONTROL_GROUP           2000
+#define CONTROL_RADIOBUTTONLIST 2
+#define CONTROL_RADIOBUTTON1    1
+#define CONTROL_RADIOBUTTON2    2       // It is OK for this to have the same IDas     CONTROL_RADIOBUTTONLIST,
+                                        // because it is a child control under CONTROL_RADIOBUTTONLIST
+
+// IDs for the Task Dialog Buttons
+#define IDC_BASICFILEOPEN                       100
+#define IDC_ADDITEMSTOCUSTOMPLACES              101
+#define IDC_ADDCUSTOMCONTROLS                   102
+#define IDC_SETDEFAULTVALUESFORPROPERTIES       103
+#define IDC_WRITEPROPERTIESUSINGHANDLERS        104
+#define IDC_WRITEPROPERTIESWITHOUTUSINGHANDLERS 105
+
+HWND ghMainWnd = 0;
+HINSTANCE ghAppInst = 0;
+RECT winRect;
+
+class CDialogEventHandler : public IFileDialogEvents,
+                            public IFileDialogControlEvents
+{
+public:
+    // IUnknown methods
+    IFACEMETHODIMP QueryInterface(REFIID riid, void** ppv)
+    {
+        static const QITAB qit[] = {
+            QITABENT(CDialogEventHandler, IFileDialogEvents),
+            QITABENT(CDialogEventHandler, IFileDialogControlEvents),
+            { 0 },
+        };
+        return QISearch(this, qit, riid, ppv);
+    }
+
+    IFACEMETHODIMP_(ULONG) AddRef()
+    {
+        return InterlockedIncrement(&_cRef);
+    }
+
+    IFACEMETHODIMP_(ULONG) Release()
+    {
+        long cRef = InterlockedDecrement(&_cRef);
+        if (!cRef)
+            delete this;
+        return cRef;
+    }
+
+    // IFileDialogEvents methods
+    IFACEMETHODIMP OnFileOk(IFileDialog *) { return S_OK; };
+    IFACEMETHODIMP OnFolderChange(IFileDialog *) { return S_OK; };
+    IFACEMETHODIMP OnFolderChanging(IFileDialog *, IShellItem *) { return S_OK; };
+    IFACEMETHODIMP OnHelp(IFileDialog *) { return S_OK; };
+    IFACEMETHODIMP OnSelectionChange(IFileDialog *) { return S_OK; };
+    IFACEMETHODIMP OnShareViolation(IFileDialog *, IShellItem *, FDE_SHAREVIOLATION_RESPONSE *) { return S_OK; };
+    IFACEMETHODIMP OnTypeChange(IFileDialog *pfd);
+    IFACEMETHODIMP OnOverwrite(IFileDialog *, IShellItem *, FDE_OVERWRITE_RESPONSE *) { return S_OK; };
+
+    // IFileDialogControlEvents methods
+    IFACEMETHODIMP OnItemSelected(IFileDialogCustomize *pfdc, DWORD dwIDCtl, DWORD dwIDItem);
+    IFACEMETHODIMP OnButtonClicked(IFileDialogCustomize *, DWORD) { return S_OK; };
+    IFACEMETHODIMP OnCheckButtonToggled(IFileDialogCustomize *, DWORD, BOOL) { return S_OK; };
+    IFACEMETHODIMP OnControlActivating(IFileDialogCustomize *, DWORD) { return S_OK; };
+
+    CDialogEventHandler() : _cRef(1) { };
+private:
+    ~CDialogEventHandler() { };
+    long _cRef;
+};
+
+HRESULT CDialogEventHandler_CreateInstance(REFIID riid, void **ppv);
+
+std::wstring openDB()
+{
+    std::wstring ret;
+
+    //Cocreate the file open dialog object
+    IFileDialog *pfd = NULL;
+
+    HRESULT hr = CoCreateInstance(CLSID_FileOpenDialog, NULL, CLSCTX_INPROC_SERVER, IID_PPV_ARGS(&pfd));
+
+    if (SUCCEEDED(hr))
+    {
+        //Stuff needed for later
+        const COMDLG_FILTERSPEC rgFExt[] = {{L"Audio Group Archive (*.*)", L"*.*"}};
+
+        //Create event handling
+        IFileDialogEvents *pfde = NULL;
+        hr = CDialogEventHandler_CreateInstance(IID_PPV_ARGS(&pfde));
+
+        if(SUCCEEDED(hr))
+        {
+            //Hook the event handler
+            DWORD dwCookie;
+
+            hr = pfd->Advise(pfde, &dwCookie);
+
+            if (SUCCEEDED(hr))
+            {
+                //Set options for the dialog
+                DWORD dwFlags;
+
+                //Get options first so we do not override
+                hr = pfd->GetOptions(&dwFlags);
+
+                if (SUCCEEDED(hr))
+                {
+                    //Get shell items only
+                    hr = pfd->SetOptions(dwFlags | FOS_FORCEFILESYSTEM);
+
+                    if (SUCCEEDED(hr))
+                    {
+                        //Types of files to display (not default)
+                        hr = pfd->SetFileTypes(ARRAYSIZE(rgFExt), rgFExt);
+
+                        if (SUCCEEDED(hr))
+                        {
+                            //Set default file type to display
+                            //hr = pfd->SetDefaultExtension(L"sqlite");
+
+                            //if (SUCCEEDED(hr))
+                            //{
+                                //Show dialog
+                                hr = pfd->Show(NULL);
+
+                                if (SUCCEEDED(hr))
+                                {
+                                    //Get the result once the user clicks on open
+                                    IShellItem *result;
+
+                                    hr = pfd->GetResult(&result);
+
+                                    if (SUCCEEDED(hr))
+                                    {
+                                        //Print out the file name
+                                        PWSTR fName = NULL;
+
+                                        hr = result->GetDisplayName(SIGDN_FILESYSPATH, &fName);
+
+                                        if (SUCCEEDED(hr))
+                                        {
+                                            ret.assign(fName);
+                                            CoTaskMemFree(fName);
+                                        }
+
+                                        result->Release();
+                                    }
+                                }
+                            //}
+                        }
+                    }
+                }
+            }
+
+            pfd->Unadvise(dwCookie);
+        }
+
+        pfde->Release();
+    }
+
+    pfd->Release();
+    return ret;
+}
+
+
+HRESULT CDialogEventHandler_CreateInstance(REFIID riid, void **ppv)
+{
+    *ppv = NULL;
+    CDialogEventHandler *pDialogEventHandler = new (std::nothrow) CDialogEventHandler();
+    HRESULT hr = pDialogEventHandler ? S_OK : E_OUTOFMEMORY;
+    if (SUCCEEDED(hr))
+    {
+        hr = pDialogEventHandler->QueryInterface(riid, ppv);
+        pDialogEventHandler->Release();
+    }
+    return hr;
+}
+
+HRESULT CDialogEventHandler::OnTypeChange(IFileDialog *pfd)
+{
+    IFileSaveDialog *pfsd;
+    HRESULT hr = pfd->QueryInterface(&pfsd);
+    if (SUCCEEDED(hr))
+    {
+        UINT uIndex;
+        hr = pfsd->GetFileTypeIndex(&uIndex);   // index of current file-type
+        if (SUCCEEDED(hr))
+        {
+            IPropertyDescriptionList *pdl = NULL;
+
+
+        }
+        pfsd->Release();
+    }
+    return hr;
+}
+
+// IFileDialogControlEvents
+// This method gets called when an dialog control item selection happens (radio-button selection. etc).
+// For sample sake, let's react to this event by changing the dialog title.
+HRESULT CDialogEventHandler::OnItemSelected(IFileDialogCustomize *pfdc, DWORD dwIDCtl, DWORD dwIDItem)
+{
+    IFileDialog *pfd = NULL;
+    HRESULT hr = pfdc->QueryInterface(&pfd);
+    if (SUCCEEDED(hr))
+    {
+        if (dwIDCtl == CONTROL_RADIOBUTTONLIST)
+        {
+            switch (dwIDItem)
+            {
+            case CONTROL_RADIOBUTTON1:
+                hr = pfd->SetTitle(L"Longhorn Dialog");
+                break;
+
+            case CONTROL_RADIOBUTTON2:
+                hr = pfd->SetTitle(L"Vista Dialog");
+                break;
+            }
+        }
+        pfd->Release();
+    }
+    return hr;
+}
diff --git a/VST/FileOpenDialog.hpp b/VST/FileOpenDialog.hpp
new file mode 100644
index 0000000..e0a8a49
--- /dev/null
+++ b/VST/FileOpenDialog.hpp
@@ -0,0 +1,8 @@
+#ifndef __AMUSE_FILEOPENDIALOG_HPP__
+#define __AMUSE_FILEOPENDIALOG_HPP__
+
+#include <string>
+
+std::wstring openDB();
+
+#endif // __AMUSE_FILEOPENDIALOG_HPP__
diff --git a/VST/VSTBackend.cpp b/VST/VSTBackend.cpp
index bb99c15..c8bb089 100644
--- a/VST/VSTBackend.cpp
+++ b/VST/VSTBackend.cpp
@@ -1,5 +1,6 @@
 #include "VSTBackend.hpp"
 #include "audiodev/AudioVoiceEngine.hpp"
+#include <Shlobj.h>
 #include <logvisor/logvisor.hpp>
 
 struct VSTVoiceEngine : boo::BaseAudioVoiceEngine
@@ -141,6 +142,13 @@ VSTBackend::VSTBackend(audioMasterCallback cb)
     m_booBackend = std::make_unique<VSTVoiceEngine>();
     m_voxAlloc.emplace(*m_booBackend);
     m_engine.emplace(*m_voxAlloc);
+
+    WCHAR path[MAX_PATH];
+    if (SUCCEEDED(SHGetFolderPathW(NULL, CSIDL_APPDATA, NULL, 0, path)))
+    {
+        m_userDir = std::wstring(path) + L"\\Amuse";
+        CreateDirectory(m_userDir.c_str(), nullptr);
+    }
 }
 
 VSTBackend::~VSTBackend()
diff --git a/VST/VSTBackend.hpp b/VST/VSTBackend.hpp
index 1210b30..0c6dbde 100644
--- a/VST/VSTBackend.hpp
+++ b/VST/VSTBackend.hpp
@@ -31,6 +31,7 @@ class VSTBackend : public AudioEffectX
     std::experimental::optional<amuse::VSTBackendVoiceAllocator> m_voxAlloc;
     std::experimental::optional<amuse::Engine> m_engine;
     size_t m_curFrame = 0;
+    std::wstring m_userDir;
     VSTEditor m_editor;
 public:
     VSTBackend(audioMasterCallback cb);
@@ -48,6 +49,9 @@ public:
     VstInt32 getNumMidiInputChannels();
     void setSampleRate(float sampleRate);
     void setBlockSize(VstInt32 blockSize);
+
+    amuse::Engine& getAmuseEngine() {return *m_engine;}
+    const std::wstring& getUserDir() const {return m_userDir;}
 };
 
 }
diff --git a/VST/VSTEditor.cpp b/VST/VSTEditor.cpp
index aa2bebe..e12cf46 100644
--- a/VST/VSTEditor.cpp
+++ b/VST/VSTEditor.cpp
@@ -1,5 +1,8 @@
 #include "VSTEditor.hpp"
 #include "VSTBackend.hpp"
+#include "FileOpenDialog.hpp"
+#include <Windowsx.h>
+#include <shellapi.h>
 
 extern void* hInstance;
 static WNDPROC OriginalListViewProc = 0;
@@ -45,6 +48,31 @@ LRESULT CALLBACK VSTEditor::WindowProc(HWND hwnd,
                 editor.selectPage(itemAct.iItem);
             return 0;
         }
+        case TVN_GETDISPINFO:
+        {
+            NMTVDISPINFO& treeDispInfo = *reinterpret_cast<LPNMTVDISPINFO>(lParam);
+            if (treeDispInfo.item.mask & TVIF_CHILDREN)
+            {
+            }
+            return 0;
+        }
+        default:
+            return DefWindowProc(hwnd, uMsg, wParam, lParam);
+        }
+    }
+    case WM_COMMAND:
+    {
+        switch (HIWORD(wParam))
+        {
+        case BN_CLICKED:
+        {
+            HWND button = HWND(lParam);
+            if (button == editor.m_collectionAdd)
+                editor.addAction();
+            else if (button == editor.m_collectionRemove)
+                editor.removeAction();
+            return 0;
+        }
         default:
             return DefWindowProc(hwnd, uMsg, wParam, lParam);
         }
@@ -137,34 +165,56 @@ bool VSTEditor::open(void* ptr)
     SetWindowLongPtrW(m_rootView, 0, LONG_PTR(this));
     ShowWindow(m_rootView, SW_SHOW);
 
+    TVINSERTSTRUCT treeItem = {};
+    treeItem.hParent = TVI_ROOT;
+    treeItem.hInsertAfter = TVI_LAST;
+
+    treeItem.item.mask = TVIF_CHILDREN | TVIF_TEXT;
+    treeItem.item.cChildren = 1;
+    treeItem.item.pszText = L"Root A";
+
     LVCOLUMN column = {};
     column.mask = LVCF_FMT | LVCF_TEXT | LVCF_WIDTH | LVCF_SUBITEM;
     column.fmt = LVCFMT_LEFT | LVCFMT_FIXED_WIDTH;
-    column.cx = 200;
+    column.cx = 199;
 
     LVITEM item = {};
-    item.mask = LVIF_TEXT | LVIF_GROUPID;
+    item.mask = LVIF_TEXT;
     item.pszText = L"Test";
-    item.iGroupId = 1;
 
     m_collectionTree = CreateWindowW(WC_TREEVIEW,
                                      L"",
-                                     WS_CHILD | WS_BORDER | TVS_HASLINES,
-                                     0, 24,
-                                     201,
-                                     m_windowRect.bottom - m_windowRect.top - 24,
+                                     WS_CHILD | WS_CLIPSIBLINGS | TVS_HASLINES | TVS_LINESATROOT | TVS_HASBUTTONS,
+                                     1, 25,
+                                     199,
+                                     m_windowRect.bottom - m_windowRect.top - 26,
                                      m_rootView,
                                      nullptr,
                                      nullptr,
                                      nullptr);
     TreeView_SetBkColor(m_collectionTree, RGB(64,64,64));
+    TreeView_SetTextColor(m_collectionTree, RGB(255,255,255));
+    HTREEITEM rootItemA = TreeView_InsertItem(m_collectionTree, &treeItem);
+    treeItem.item.pszText = L"Root B";
+    HTREEITEM rootItemB = TreeView_InsertItem(m_collectionTree, &treeItem);
+    treeItem.hParent = rootItemA;
+    treeItem.item.cChildren = 0;
+    treeItem.item.pszText = L"Child A";
+    TreeView_InsertItem(m_collectionTree, &treeItem);
+    treeItem.item.pszText = L"Child B";
+    TreeView_InsertItem(m_collectionTree, &treeItem);
+    treeItem.hParent = rootItemB;
+    treeItem.item.pszText = L"Child A";
+    TreeView_InsertItem(m_collectionTree, &treeItem);
+    treeItem.item.pszText = L"Child B";
+    TreeView_InsertItem(m_collectionTree, &treeItem);
     ShowWindow(m_collectionTree, SW_SHOW);
 
     m_collectionHeader = CreateWindowW(WC_HEADER,
                                        L"",
                                        WS_CHILD,
                                        1, 1,
-                                       200,
+                                       199,
                                        24,
                                        m_rootView,
                                        nullptr,
@@ -174,12 +224,39 @@ bool VSTEditor::open(void* ptr)
     OriginalListViewProc = WNDPROC(SetWindowLongPtr(m_collectionHeader, GWLP_WNDPROC, LONG_PTR(ColHeaderWindowProc)));
     ShowWindow(m_collectionHeader, SW_SHOW);
 
+    m_collectionAdd = CreateWindowW(WC_BUTTON,
+                                    L"+",
+                                    WS_CHILD | WS_CLIPSIBLINGS | BS_PUSHBUTTON,
+                                    1, m_windowRect.bottom - m_windowRect.top - 26,
+                                    25, 24,
+                                    m_rootView,
+                                    nullptr,
+                                    nullptr,
+                                    nullptr);
+    SetWindowFont(m_collectionAdd, GetStockObject(ANSI_FIXED_FONT), FALSE);
+    Button_Enable(m_collectionAdd, TRUE);
+    SetWindowPos(m_collectionAdd, HWND_TOP, 1, m_windowRect.bottom - m_windowRect.top - 26, 25, 24, SWP_SHOWWINDOW);
+
+    m_collectionRemove = CreateWindowW(WC_BUTTON,
+                                       L"-",
+                                       WS_CHILD | WS_CLIPSIBLINGS | BS_PUSHBUTTON,
+                                       26, m_windowRect.bottom - m_windowRect.top - 26,
+                                       25, 24,
+                                       m_rootView,
+                                       nullptr,
+                                       nullptr,
+                                       nullptr);
+    SetWindowFont(m_collectionRemove, GetStockObject(ANSI_FIXED_FONT), FALSE);
+    Button_Enable(m_collectionRemove, TRUE);
+    SetWindowPos(m_collectionRemove, HWND_TOP, 26, m_windowRect.bottom - m_windowRect.top - 26, 25, 24, SWP_SHOWWINDOW);
+
+
     m_groupListView = CreateWindowW(WC_LISTVIEW,
                                     L"",
-                                    WS_CHILD | WS_BORDER | LVS_REPORT | LVS_SINGLESEL | LVS_NOSORTHEADER,
-                                    200, 0,
-                                    201,
-                                    m_windowRect.bottom - m_windowRect.top,
+                                    WS_CHILD | LVS_REPORT | LVS_SINGLESEL | LVS_NOSORTHEADER,
+                                    201, 1,
+                                    199,
+                                    m_windowRect.bottom - m_windowRect.top - 2,
                                     m_rootView,
                                     nullptr,
                                     nullptr,
@@ -189,25 +266,32 @@ bool VSTEditor::open(void* ptr)
     SetWindowLongPtrW(header, GWLP_USERDATA, LONG_PTR(column.pszText));
     SetWindowLongPtr(header, GWLP_WNDPROC, LONG_PTR(ColHeaderWindowProc));
     ListView_SetBkColor(m_groupListView, RGB(64,64,64));
+    ListView_SetTextBkColor(m_groupListView, CLR_NONE);
+    ListView_SetTextColor(m_groupListView, RGB(255,255,255));
     ListView_InsertColumn(m_groupListView, 0, &column);
+    ListView_InsertItem(m_groupListView, &item);
     ShowWindow(m_groupListView, SW_SHOW);
 
     m_pageListView = CreateWindowW(WC_LISTVIEW,
                                    L"",
-                                   WS_CHILD | WS_BORDER | LVS_REPORT | LVS_SINGLESEL | LVS_NOSORTHEADER,
-                                   400, 0,
-                                   200,
-                                   m_windowRect.bottom - m_windowRect.top,
+                                   WS_CHILD | LVS_REPORT | LVS_SINGLESEL | LVS_NOSORTHEADER,
+                                   401, 1,
+                                   198,
+                                   m_windowRect.bottom - m_windowRect.top - 2,
                                    m_rootView,
                                    nullptr,
                                    nullptr,
                                    nullptr);
     column.pszText = L"Page";
+    column.cx = 198;
     header = ListView_GetHeader(m_pageListView);
     SetWindowLongPtrW(header, GWLP_USERDATA, LONG_PTR(column.pszText));
     SetWindowLongPtr(header, GWLP_WNDPROC, LONG_PTR(ColHeaderWindowProc));
     ListView_SetBkColor(m_pageListView, RGB(64,64,64));
+    ListView_SetTextBkColor(m_pageListView, CLR_NONE);
+    ListView_SetTextColor(m_pageListView, RGB(255,255,255));
     ListView_InsertColumn(m_pageListView, 0, &column);
+    ListView_InsertItem(m_pageListView, &item);
     ShowWindow(m_pageListView, SW_SHOW);
 
     return true;
@@ -224,6 +308,31 @@ void VSTEditor::update()
 
 }
 
+void VSTEditor::addAction()
+{
+    VstFileSelect fSelect = {};
+    fSelect.command = kVstFileLoad;
+    fSelect.type = kVstFileType;
+    strcpy(fSelect.title, "Select Audio Group Archive");
+    if (m_backend.openFileSelector(&fSelect))
+    {
+        m_backend.closeFileSelector(&fSelect);
+    }
+    else
+    {
+        std::wstring path = openDB();
+        if (path.size())
+        {
+
+        }
+    }
+}
+
+void VSTEditor::removeAction()
+{
+
+}
+
 void VSTEditor::selectCollection(int idx)
 {
 
diff --git a/VST/VSTEditor.hpp b/VST/VSTEditor.hpp
index 093f126..8a89762 100644
--- a/VST/VSTEditor.hpp
+++ b/VST/VSTEditor.hpp
@@ -14,12 +14,16 @@ class VSTBackend;
 /** Editor UI class */
 class VSTEditor : public AEffEditor
 {
+    friend class AudioGroupFilePresenter;
+
     VSTBackend& m_backend;
     ERect m_windowRect = {0, 0, 420, 600};
 
     HWND m_rootView;
     HWND m_collectionHeader;
     HWND m_collectionTree;
+    HWND m_collectionAdd;
+    HWND m_collectionRemove;
     HWND m_groupListView;
     HWND m_pageListView;
 
@@ -43,6 +47,9 @@ public:
     void close();
     void update();
 
+    void addAction();
+    void removeAction();
+
     void selectCollection(int idx);
     void selectGroup(int idx);
     void selectPage(int idx);