Here's a a hopefully simple suggestion. In the 1.0 days, you pressed the same buttons to get to the change menu, whether you were using the radio or listening to MP3's. Something along the lines of down-right-down-down would always get your MP3s and down-right-down-right-down would always get the radio, regardless of the current state of the player.

In the 2.0 betas, it's different. Since I don't want to have to dig my remote control out just to change the mode of the player, it would be nice if, whatever they do in the next beta, to have this particular menu in the same place, regardless of what you're listening to.