Kyle Gann has created his own online radio station, PostClassic Radio. I think this could be the next big thing in blogging, creating sites that rotate through the pieces that a musician wants to expose to the world. Perhaps a melding of technology, allowing more text beyond composer/title. Greg Sandow has developed a real-time commentary for live performances, which could be adapted for online radio. Maybe even comments from listeners that appear at the time that they made them (real-time commentary?)
The system Kyle is using handles the fair treatment for musicians well, as it has contracts with BMI and ASCAP. I think this has potentials far beyond mp3 blogs. I'm also enjoying my first exposure to Totalism and Downtown music on Kyle's station.