A channel for stream audio (game sound and streamer voice) and a second channel for the streamer background music. In my opinion this would help both sides.
Viewers: will be able to select the background music volume. sometimes you just want to enjoy the game without background music that doesnt match your mood.
Streamers: Makes it easier to keep audience since they will not have to deal with making everyone happy with the music.
A channel for stream audio (game sound and streamer voice) and a second channel for the streamer background music. In my opinion this would help both sides.
Viewers: will be able to select the background music volume. sometimes you just want to enjoy the game without background music that doesnt match your mood.
Streamers: Makes it easier to keep audience since they will not have to deal with making everyone happy with the music.