An email has been sent to Support to find out the answer to this, though its likely that support will mute the video.

Reply from Support will be edited in this reply once its been received.

Supports answer:

Our standard policy is to not allow background music in uploaded videos
to remove the possibility that the music may be unlicensed.  With that
said, we may be able to waive this restriction if the broadcaster is
able to provide proof (to support@chaturbate.com before uploading the
video) that they have permission to use the background music that is in
the video.

CBR2