For the FM transmitter:

***If using car charger plug in first before doing anything***

1. Start song.
2. Start fm transmitter
3. Start fm boost-If you take another call or open another program then you must use the fm boost application again. You must do this and I dont know exactly why but it works. I use mine in my car everytime I get in. I am in Chicago metropolitan area. There are hardly any free radio frequencies. I use 98.3 here in Chicago and it works about 95% of the time.

P.S. No sound is supposed to come out of phone speakers unless you receive a phone call while using fm transmitter.