Speech problems with vent

[awsyme@mac.com]

Downloaded the most recent version of vent for my mac today (having never installed it before) for a game of warcraft.

Connected to the groups channel without any problems - got the 'you have now entered' etc etc voices - but couldn't hear a thing.

Any clues what I could do to start chasing this up? My sound settings in mac os were definitely both on my headset - and I made sure the codex was switched.