4OD is absolutely dreadful, and I've found that it doesn't work on Linux. Luckily, there's a 4OD YouTube channel where you can get the same content in a better (but still buggy, I assume Google wrote custom advertising code for them) player.
EDIT: Actually, they've gone and removed all that. Wonderful. I wish companies would license the BBC iPlayer technology.
EDIT: Actually, they've gone and removed all that. Wonderful. I wish companies would license the BBC iPlayer technology.