I recently downloaded the TomTom navigation app for my iPhone 3GS. I noticed today that if you connect the iPhone to the iPod integration kit in the cube, the voice directions play through the cube's stereo speakers instead of the iPhone itself. This was a very pleasant surprise. :yes: When the voice directions come up, the music fades out slowly and then returns after the directions are given. It baffles me that you can play music and TomTom voice directions through the cube's stereo via the iPod kit but you can't run phone calls the same way. Anyone know why? Are you able to run phone calls through the speakers via the cube's headunit audio jack?