Careful, the link you pointed to does not have HW accleration.I am just using the stable build listed on xbmc.org/download. I just clicked on the Android download link. The file name is xbmc-12.2-Frodo-armeabi-v7a.apk but I will give that a try now. Should I uninstall the current apk or just override?
On a side note, I am using a PS3 controller wirelessly with the Ouya, so I am slowly liking the system more and more. I'll report back in a few after I update xbmc.
Alpha builds with HW acceleration will have "stagefright" in the name. This is the latest Alpha build with HW acceleration that you should install:
http://mirrors.xbmc.org/test-builds...f76-Gotham_alpha2_stagefright-armeabi-v7a.apk
It's probably safest to uninstall XBMC, as I don't know how the alpha builds interact with the release build. But if you're feeling lucky, you can try just installing it right on top of the existing one. I've been installing the alpha builds on top of each other and it works fine.