Aren't the Rio Central and the empeg very similar in hard ware? I assume that if the empeg team is going to provide Ogg support because they are getting the license for free, they may be able to pursuade the bean counters to pay for Ogg on the Rio Central (because the license would be the only cost - they've already done the needed in house developement!)

Seems like this format would really kill in the portable market. Yet WMA has some of the same advantages.