FM Transmitter

Buddy of mine put a music DVD in his laptop Stuck a USB stick into the side & dialed his home stereo tuner to a certain frequency, & cranked the volume - it was killer !! what was it ?

Are you sure it was USB? There are hundreds of FM transmitters for iPods and the like, but I’ve not seen a USB one.

Yeah, it was about 4 in. long- standard quarter in. male plug- didnt think to ask him at the time, now cant find him