Fixed a couple incoming audio bugs

src/Discord.Net.WebSocket/Audio/Opus/OpusDecoder.cs

@@ -32,11 +32,11 @@ namespace Discord.Audio
             int result = 0;
             fixed (byte* inPtr = input)
             fixed (byte* outPtr = output)
-                result = Decode(_ptr, inPtr + inputOffset, inputCount, outPtr + outputOffset, (output.Length - outputOffset) / SampleSize / MaxChannels, 0);
+                result = Decode(_ptr, inPtr + inputOffset, inputCount, outPtr + outputOffset, (output.Length - outputOffset) / SampleSize, 0); //TODO: Enable FEC
 
             if (result < 0)
                 throw new Exception($"Opus Error: {(OpusError)result}");
-            return result;
+            return result * 4;
         }
 
         protected override void Dispose(bool disposing)

src/Discord.Net.WebSocket/Audio/Streams/OpusDecodeStream.cs

@@ -12,7 +12,7 @@ namespace Discord.Audio.Streams
         private readonly byte[] _buffer;
         private readonly OpusDecoder _decoder;
 
-        public OpusDecodeStream(AudioStream next, int channels = OpusConverter.MaxChannels, int bufferSize = 4000)
+        public OpusDecodeStream(AudioStream next, int channels = OpusConverter.MaxChannels, int bufferSize = 5760 * 4)
         {
             _next = next;
             _buffer = new byte[bufferSize];

src/Discord.Net.WebSocket/DiscordVoiceApiClient.cs

@@ -54,7 +54,7 @@ namespace Discord.Audio
             _udp = udpSocketProvider();
             _udp.ReceivedDatagram += async (data, index, count) =>
             {
-                if (index != 0)
+                if (index != 0 || count != data.Length)
                 {
                     var newData = new byte[count];
                     Buffer.BlockCopy(data, index, newData, 0, count);