I can’t say squirt without feeling really dirty, at any rate, it looks like Universal and Sony are pissing off Zune customers. The ability to transfer songs from one Zune MP3 player to another was the primary reason to own a Zune, compared to an iPod, but the amount of compatable songs is quickly dimenishing.
According to a post over at ZuneUser, you stand a 50/50 chance that the songs you download will not be transferrable. Originally all songs would be able to capitalize on this new technology, but with the restriction that they last X amount of times played or a specified number of days. Since Universal and Sony have their way, not every son is fair game and Zune users want to be warned.