Added AvaloniaUI project.

Harmonia.Core/Engine/BassAudioEngine.cs

@@ -86,6 +86,8 @@ public class BassAudioEngine : IAudioEngine, IDisposable
 
     public BassAudioEngine()
     {
+        BassLoader.Initialize();
+
         _mediaPlayer = new MediaPlayer();
         _mediaPlayer.MediaLoaded += OnMediaLoaded;
         _mediaPlayer.MediaFailed += OnPlaybackStopped;

Harmonia.Core/Engine/BassLoader.cs

@@ -0,0 +1,22 @@
+using System.Runtime.InteropServices;
+
+namespace Harmonia.Core.Engine;
+
+public static class BassLoader
+{
+    public static void Initialize()
+    {
+        string archFolder = Environment.Is64BitProcess ? "x64" : "x86";
+        string bassPluginPath = Path.Combine("Plugins", "Bass", "Win32", archFolder);
+
+        LoadLibrary(bassPluginPath, "bass.dll");
+        LoadLibrary(bassPluginPath, "bassflac.dll");
+    }
+
+    private static void LoadLibrary(string bassPluginPath, string resourceName)
+    {
+        string resourcePath = Path.Combine(bassPluginPath, resourceName);
+
+        NativeLibrary.Load(resourcePath);
+    }
+}

Harmonia.Core/Harmonia.Core.csproj

@@ -17,4 +17,19 @@
     <PackageReference Include="TagLibSharp" Version="2.3.0" />
   </ItemGroup>
 
+  <ItemGroup>
+    <None Update="Plugins\Bass\Win32\x64\bass.dll">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Update="Plugins\Bass\Win32\x64\bassflac.dll">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Update="Plugins\Bass\Win32\x86\bass.dll">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Update="Plugins\Bass\Win32\x86\bassflac.dll">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+
 </Project>

Harmonia.Core/Player/AudioPlayer.cs

@@ -36,6 +36,7 @@ public class AudioPlayer : IAudioPlayer
         {
             _playingSong = value;
             NotifyPropertyChanged(nameof(PlayingSong));
+            PlayingSongChanged?.Invoke(this, new());
         }
     }
 
@@ -111,6 +112,7 @@ public class AudioPlayer : IAudioPlayer
 
     protected virtual int PreviousSongSecondsThreshold => 5;
 
+    public event EventHandler? PlayingSongChanged;
     public event PropertyChangedEventHandler? PropertyChanged;
 
     public AudioPlayer(IAudioEngine audioEngine, IPlaylistRepository playlistRepository)

Harmonia.Core/Player/IAudioPlayer.cs

@@ -24,5 +24,6 @@ public interface IAudioPlayer
     Task PreviousAsync();
     Task NextAsync();
 
+    event EventHandler PlayingSongChanged;
     event PropertyChangedEventHandler PropertyChanged;
 }