In a move that could be considered similar to what Muvu's been doing with Cricket, Rhapsody announced today it's teamed up with MetroPCS to bring a more desirable music plan to the carrier's subscribers. What this means, essentially, is that MetroPCS customers can now pay an extra $5 per month on their plan to stream as many on-demand tunes as possible from Rhapsody's extensive repertoire, so long as it's one of