A really unusual radio station that’s prospering? “Seattle’s 720-watt KEXP, partly funded by Microsoft Corp. co-founder Paul Allen, last month became the first station in the U.S. to offer a “podcast” of full-length songs from albums for Apple Computer Inc.’s iPod music players. Podcasts typically are free broadcasts delivered via the Web to computers, allowing users to transfer the digital audio and listen anytime. In the next few weeks, KEXP says it will become the first to make its live radio broadcasts suitable for cellphones and handheld organizers.”