Override default SDL audio ducking option

Limelight/Stream/Connection.m

@@ -234,6 +234,9 @@ int ArInit(int audioConfiguration, POPUS_MULTISTREAM_CONFIGURATION opusConfig, v
     // Start playback
     SDL_PauseAudioDevice(audioDevice, 0);
     
+    // Disable lowering volume of other audio streams (SDL sets AVAudioSessionCategoryOptionDuckOthers by default)
+    [[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback withOptions:AVAudioSessionCategoryOptionMixWithOthers error:nil];
+    
     return 0;
 }