I don't think there are any channels broadcasting without commentary this year (on any providers). If you are hooked up to an AVR, you can try muting your centre channel. This usually works for hockey. It depends on how CBC implements the audio mix from FIFA.
If it doesn't work on CBC, you could also try SRC (french HD broadcast).
If you don't have an HD receiver, it won't work.
TLN is showing games in italian and spanish too.