Don't know if people have seen this, but there is a special going on at MicroCenter right now, buy a Pi 3 and get this free. In-store pick-up only though unfortunately.
Uses? Maybe a voice activated system for people watching to pick a song? Being able to change your show list? A lot of creative people on this site that I am sure could come up with some use for it in their shows.
http://www.microcenter.com/site/content/Google_AIY_Preorder.aspx
