I'm afraid I have disappointing follow-up news. After some testing it looks like you can't hear other people's custom soundbanks in online games, even if you have the same soundbank yourself. Until they fix that at least, consider my dibs withdrawn.
edit: ok, forget what I just said. There was a filename mismatch. It should work properly.
Last edited by Harald B; 12-17-2010 at 10:07 AM.