I have successfully installed Slingplayer for Boxee Box with a Pro HD. However, not all the sources are listed with the component source (Sky+ HD) being absent. This means that although the component source is streaming correctly and in HD I cannot control this source as only Quality, Source, and Disconnect are available (i.e. no remote control loads). Any one else had this problem and knows a fix?
Fixed the issue by using setup.slingbox.com to restate the sources list for component, which also required some trial and error with several Sky+ HD remotes (Thomson, Sky+, Sky+HD, etc). Then some re-installing of the app in Boxee Box and eventually the issue resolved. I no have control over my Thomson component Sky+ HD box via Slingplayer for Boxee Box... great app!