Rockbox is normally a replacement firmware for a wide variety of DAPs/MP3 players (you can learn more about that here: http://rockbox.org), but it is also available as an android apk and an SDL app for the desktop. The last one is what this is considered. You should be able to use this build to play music files, such as FLAC, AAC, MP3, Ogg, etc. You should also be able to play some simple games included in this under "plugins" and may even be able to play Doom and Gameboy (Color) games. This is just a test build, and I need some testers so I can get some feedback on it. You can download the zip of it here: http://dl.dropbox.com/u/12095030/rockbox.zip . Its not in a pretty .pnd yet, just a simple executable. You may want to download some 'extras' for this build as the default font will be tiny. You can download them from http://www.rockbox.org/wiki/RockboxExtras . (someone should try running Doom on this...) Please post any feedback out have on this and if you find any bugs or usability problems on the way. In the future I'll try to learn more about the pandora's SDK and try to package it up in a .pnd and post it in other places.