Thread: dual soundcards - seperate soundcard for gps?

an idea struck me last night to use two soundcards: one for normal audio (music) and then one for strictly gps navigation (tells you where to turn)

I want to have the audio but I dont want it to be competing over the music
If I just used one soundcard, the voice would be at the same volume as the music (loud) and would be bothersome. If I somehow managed to get the music to pause automatically while the voice spoke, it would still be bothersome (imo).
So dual soundcard is the idea I have (since CoPilot allows you to choose which soundcard to output from)


Good idea? Bad idea? Problems? Alternate solutions?