I've ripped my music collection in lossless WMA. It lets me stream to my Xbox 360 now, and it's a common enough format that I'm not so worried that I might have to re-rip my entire music collection again later. Of course, I've only recently begun ripping them and including the album covers, so if I start streaming to a device that can extract that coolness, it will only work with a small percentage of my collection.