I have recently aquired a SPRINT HTC EVO and downloaded the Pandora Software that allows you to pick your own music. I out of force of habit hit the scan "next" button on the radio and it moved to the next song from Pandora.

I havn't sit down and read the manual on the Bluetooth Audio, but found this neat to be able to do.

 

I just bought a 16 Gig mini SD card for my Blackberry, copied all of my music from my PC to the phone.
Sat in the car and rotated from Aux to USB to Bluetooth. Now my phone is a source as is my thumbdrive, as is my HDD. I've got more audio than hours in a day to listen to it!
I am not sure that the quality of the Bluetooth is as good as the other sources though, do you have an opinion on the quality of your Bluetooth source?
It is neat to pair your buddies phone so, on a long trip, we can all listen to some new stuff.

 

On Pandora, I have the Audio Quality set to high, and it sounds just as good as my iPod connection.