What is this cable (see link for pic)? One end is a standard 1/8inch speaker jack, and the other end looks like a wireless transmitter/receiver. Also, the other side of the 'wireless' end has a 3M adhesive sticker on it.
https://docs.google.com/file/d/0B56-r5mzvtqxM2loX1F2NVhRdG8/edit?usp=sharing
https://docs.google.com/file/d/0B56-r5mzvtqxM2loX1F2NVhRdG8/edit?usp=sharing