| | I have had a similar problem on my 8130...
While playing audio files (MP3s) and I get an e-mail, the music pauses, I get the new message notification sound out of the phones speaker, and then the music starts back again. This occurs with any profile that has an audible tone notification. When I switch the profile to phone only, vibrate, quiet or off, the music plays on when a message is received.
Try one of these profiles and see if the problem resolves.
Two Mike Romeo