There is an official XBMC wiki page for Ouya is up, no much on it, but it says that this build: http://mirrors.xbmc.org/test-builds/android/xbmc-20130219-32e99c7-android-hwaccel-armeabi-v7a.apk is the most stable. Newer version may work ,but it is good to keep in mind these are just test builds and that newer ones make break things unless it is a release candidate (RC) or a stable build. I have not tried the one on their wiki since alpha 4 seems to be working great for me.