You might be out of luck on the Ally. Flash 10 on 2.2 was intended for newer phones that have an ARMv7 processor (Snapdragon, OMAP, etc.). The Ally has an ARMv6 like my Eris. However, my Eris does run Flash 10 on 2.1. Though, it had Flash Lite 3 stock making it easier. Maybe if your lucky, someone may have ported Flash 10 to the Ally. Just don't expect beautiful results for video. It should be more than enough for the Facebook music player though.