I have a bluetooth enabled PDA. It can transmit audio over bluetooth. I currently have a stock HU in my car. I want to be able to transmit from my pda my music in bluetooth and hear it on an FM frequency.

My Plan:

Remove the speaker on a bluetooth headset. Attached a the input of the FM Modulator to the speaker output of the Bluetooth headset. Hardwire Power to both on a switch and conceal assemble behind dash.

My Concerns:

Poor quality of sound
Loss of Stereo (reduction to mono)

Are there any reasonably priced units already designed. I haven't been able to find a gadget like this.