small changes

src/NadekoBot/Modules/Music/Music.cs

@@ -253,10 +253,9 @@ namespace NadekoBot.Modules.Music
 
         [NadekoCommand, Usage, Description, Aliases]
         [RequireContext(ContextType.Guild)]
-        public Task Destroy()
+        public async Task Destroy()
         {
-            _music.DestroyPlayer(Context.Guild.Id);
-            return Task.CompletedTask;
+            await _music.DestroyPlayer(Context.Guild.Id);
         }
 
         [NadekoCommand, Usage, Description, Aliases]

src/NadekoBot/Services/Music/MusicPlayer.cs

@@ -15,7 +15,7 @@ namespace NadekoBot.Services.Music
         Playing,
         Completed
     }
-    public class MusicPlayer : IDisposable
+    public class MusicPlayer
     {
         private readonly Task _player;
         private readonly IVoiceChannel VoiceChannel;
@@ -92,7 +92,12 @@ namespace NadekoBot.Services.Music
                          });
                          var ac = await GetAudioClient();
                          if (ac == null)
+                         {
+                             await Task.Delay(900);
+                             // just wait some time, maybe bot doesn't even have perms to join that voice channel, 
+                             // i don't want to spam connection attempts
                              continue;
+                         }
                          var pcm = ac.CreatePCMStream(AudioApplication.Music);
 
                          OnStarted?.Invoke(this, data.Song);
@@ -175,9 +180,9 @@ namespace NadekoBot.Services.Music
             {
                 Stopped = false;
                 Unpause();
-            }
                 CancelCurrentSong();
             }
+        }
 
         public void Stop(bool clearQueue = false)
         {
@@ -188,9 +193,9 @@ namespace NadekoBot.Services.Music
                 if (clearQueue)
                     Queue.Clear();
                 Unpause();
-            }
                 CancelCurrentSong();
             }
+        }
 
         private void Unpause()
         {
@@ -283,19 +288,23 @@ namespace NadekoBot.Services.Music
             }
         }
 
-        public void Dispose()
+        public async Task Destroy()
         {
-            _log.Info("Disposing");
+            _log.Info("Destroying");
             lock (locker)
             {
+                Stop();
                 Exited = true;
                 Unpause();
-            }
-            CancelCurrentSong();
+
                 OnCompleted = null;
                 OnPauseChanged = null;
                 OnStarted = null;
             }
+            var ac = _audioClient;
+            if (ac != null)
+                await ac.StopAsync();
+        }
 
 
         //private IAudioClient AudioClient { get; set; }

src/NadekoBot/Services/Music/MusicQueue.cs

@@ -112,8 +112,11 @@ namespace NadekoBot.Services.Music
         }
 
         public void ResetCurrent()
+        {
+            lock (locker)
             {
                 CurrentIndex = 0;
             }
         }
+    }
 }

src/NadekoBot/Services/Music/MusicService.cs

@@ -5,11 +5,9 @@ using System.Threading.Tasks;
 using Discord;
 using NadekoBot.Extensions;
 using NadekoBot.Services.Database.Models;
-using System.Text.RegularExpressions;
 using NLog;
 using System.IO;
 using VideoLibrary;
-using System.Net.Http;
 using System.Collections.Generic;
 using Discord.Commands;
 
@@ -235,10 +233,10 @@ namespace NadekoBot.Services.Music
             return song;
         }
 
-        public void DestroyPlayer(ulong id)
+        public async Task DestroyPlayer(ulong id)
         {
             if (MusicPlayers.TryRemove(id, out var mp))
-                mp.Dispose();
+                await mp.Destroy();
         }
 
         //        public async Task QueueSong(IGuildUser queuer, ITextChannel textCh, IVoiceChannel voiceCh, string query, bool silent = false, MusicType musicType = MusicType.Normal)