Does nothing useful for me

I bought this app because when Im listening to an audio book and using GPS if I pause the book the GPS voice comes in as a crappy sounding phonecall and from that point on the audio book glitches in and out of phonecall mode as well. I thoughA2DP is what made that happen. This does absolutely nothing to stop my phone from incorrectly taking over my car stereo as an incoming call when I already have my audio output set to my Sync car system

Charles Boehm about A2DPblocker - Bluetooth Mono