Help with A2DP Stereo bluetooth speakerphone

[dollarxgeneral]

I am trying to get my phone to work with my car through a stereo bluetooth speakerphone and can't figure out how to get it to work. Since my car itself doesn't have bluetooth or A2DP support, I had to buy a bluetooth speakerphone with an FM transmitter (Extend Car MP3 Bluetooth FM Transmitter FOR USB/SD/MMC - eBay (item 250491637762 end time Dec-30-09 07:37:00 PST)) and cannot get it to work. I can get the phone audio to play through the bluetooth speakerphone but cannot for the life of me get it to play my music.

Any suggestions?