To get my 4oD Boxee app working I first had to convert Channel 4’s YouTube feeds into Boxee’s format. I’ve gone with the simplest thing I possibly could - just including the bare essentials - but it serves my purpose so maybe it’ll be of some use to someone else.
In a nutshell: you pass it a YouTube username, it gives you back a Boxee RSS feed. Done.
Here are some examples: