Stitcher

This just might be genius.

US-based company Stitcher are launching a customisable radio facility for use on mobile phones. Initially being rolled out on the iPhone, the player will allow you to syndicate audio content that you want to listen to - a bit like an RSS reader for audio, I guess. Quite rightly so they're pitching this at commuters, offering them a way of getting digests from their favorite audio content sources back to back while on the move. Check out the 'about' section on their site, and also read the Mashable blog article about this.