Boxee held it’s “Boxee Event” in San Francisco last night. They declared the winner of their App Dev Challenge and made several announcements. Most notable (says Dave), Boxee has integrated MLB.TV Premium. MLB.TV is MLB.com’s online subscription service with high quality video streams of live games with premium features like DVR functionality and HD video when available. Boxee also released their Windows version as a public beta, meaning anyone can download and try it out.