SoundJam MP was an early Mac OS-compatible MP3 player and Rio-compatible hardware synchronization manager that was released in July 1998 and was available until June 2001. Jeff Robbin and Bill Kincaid developed SoundJam MP with assistance from Dave Heller. Robbin and Kincaid chose Casady & Greene to publish SoundJam MP. Apple, Inc. purchased SoundJam MP in 2000 and further developed the code to create iTunes version 1.0.