My review of the speaker will appear on my blog this weekend. I just haven’t had time to get around to it! I think I’ll also use Big Buck Bunny (as Alex says, it’s free and open source) and I think I’ll try it coming out of the B+ audio jack, just to be different! 🙂
You can get hold of one of these excellent speakers from The Pi Hut’s shop. They only cost £12 and, I believe, are the best solution for playing sounds on the Pi at the moment.