Incompatibility Slowing Growth of Digital Music

Billboard: This is not necessarily news, but a good overview of the biggest issue holding back the growth of digital music market. Incompatibility, with dueling DRMs from Microsoft and Apple, is the bane, and it seems nowhere near being solved. Experts say the DRM dilemma might not be resolved for another two years.
The situation is about to get even more complicated as wireless carriers get in on the act with technology that allows mobile phone users to buy music downloads over the air.