Microsoft is set to unveil the latest version of its media playback software on Thursday, giving its partners powerful new tools for selling digital entertainment services even as it launches its own music download store. With Windows Media Player 10, Microsoft hopes to leapfrog competitors such as Apple Computer and RealNetworks with some novel features, …

A customer of Apple Computer’s iTunes Music Store said he has successfully resold a song he purchased through the service, ending a weeklong exercise he hoped would highlight the legal and technical nuances of emerging digital music services. George Hotelling, a Web developer in Ann Arbor, Mich., on Tuesday reported the details of the transfer on his Web log. In …

eBay on Thursday canceled an auction that sought to resell a music download that was purchased through Apple Computer’s iTunes Music Store, saying the attempted sale violated its listing policies. The move for now brings to an end a quirky effort to dramatize some of the less-obvious effects of the music industry’s shift from physical media sales to digital downloads–in …