Hi, This might be better in the gps section but it's more of an hardware issue... I have on order a 700idt and i am thinking of getting the infomap navagatior pro software with the voice directions, As i dont know how either work yet i was wondering.. when the nav gives you directions does it 'talk over' the music or mute the music that is coming through your speakers? Then i thought, as the xenarc has a built-in speaker is it possible to set things up so my nav software could use my laptops on board audio card and send the voice nav to the xenarc while the front end uses my usb soundblaster mp3+ for the music to my amps? Also has anybody tried the speaker in the 700idt, and is it clear enough for this and loud enough to be heard over the music? Thanks!