Why can I hear ringing if my speakers are on 'Mute'?

If you do not want Google Talk to automatically unmute your speakers when a call is coming in, follow these steps:
  1. Click 'Settings' at the top of your Friends list.
  2. Highlight 'Audio' along the left side of the dialogue box, and untick the box next to 'Unmute speaker when I receive a call.'
  3. Click 'OK'.
If you disable this option, make sure to manually unmute your speakers when you are ready to receive calls.