OK - the 3rd version of the PlayOn beta is live. We sent it out to a select set  of Beta testers and it seems to be performing well, so now it is available to all Beta users - www.themediamall.com/playon.  It fixes a host of bugs and adds some of the most requested features:

YouTube (User Playlists/Subscriptions and Published videos)

Hulu (Movies, New categorization of episodes and clips with season and episode numbers)

Added an optional icon in the system tray to see the status of the server, and made it such that you can disable it from automatically starting when windows starts

We continue to crank away on incremental features as we move toward launch. We have been getting great feedback so far and are still listening! So please let us know if you have thoughts on PlayOn!