Review: Motorola Atrix HD for AT&T
Media options on the Atrix HD are the most limited I've encountered in a long time. At least, as it comes out of the box.
The only music application preinstalled is Google Play Music. No FM radio, no Slacker, no Pandora, not even the simple media player are available. As for video, there's the AT&T Live TV app, and a new movie rental service from AT&T. Add those to the Google Play Movies store and native YouTube app, and that's the sum total of all the media services on the Atrix. Of course, you can download anything you want from the Google Play Store.
In terms of performance, music that I played through the Google Play Music app sounded good, even when streamed over the cellular network. I wish the Google Play Music app had more controls for fine-tuning the sound, though. The Google Play Movies app is a fine video player for sideloaded, captured, or purchased content. Movies looked really good on the 1280 x 720 ColorBurst display, and sounded good on my favorite pair of earbuds.