I just upgraded to 17.0.31 and I am getting random "Unable to play UPnP song" or "Unable to play SONG TITLE" errors on my Roku Soundbridge. The interesting thing is that some of these songs were just played previous to the upgrade and sometimes a given track that failed will play if I double click on it to try again. These files are FLAC and are being transcoded to "Uncompressed" on the fly. This does not occur when playing the same files to a hard wired zone.
It looks like you have been working on the error handling routine. Previously when you hit an unplayable song in a playlist it threw up a modal dialog on the server and everything stopped. The bad part of that is that you had to go to the server to figure out what happened. The good thing is that you could click on the songs around where it stopped to figure out what song was the problem. I much prefer the new error handling approach but are you logging the errors somewhere?
Matt