Request: Mute Music for Co-Pilot (GPS Nav) Instructions

[Sup3rT3d]

In my car i have my pocket pc playing the tunes (via the car stereo) and i also use Co-Pilot Live 6 on my PPC to direct me. But i cant do them both at the same time as the music plays over the directions, is there a way where the music can stop/mute while Co-Pilot is instucting me.

Please advise