PassAlong Networks has introduced a new DRM option for its record label partners that tries to provide an element of control over the otherwise unprotected MP3 format.

The company's freedomMP3 platform allows the sale of interoperable MP3 tracks that can work on any device. It also contains technology that gives content owners the chance to place rules on the tracks on a song-by-song basis.

Specifically, labels can control how many times an individual track can be moved off a buyer's PC -- such as to an MP3 player, another computer, IM, or burn to a CD. Once those predetermined number of copies are used up, the consumer would have to buy the track again.