I just downloaded Yahoo IM to my Powerbook G4. I cannot enable "audibles". Help gives unworkable directions.

Yahoo IM for Mac ver 3.0 - the Help on how to enable Audibles leads to a dead end as if it had been written for a previous version. So can someone tell me how to enable audibles on Yahoo! Messenger Version 3.0 beta 3 (98855) running on a Powerbook G4 with OSX Tiger 10.4.11.