It's possible to broadcast music, MP3, etc.. through Google Talk.Unplug your microphone.
- Double click on the speaker icon in the lower right corner.
- This will open up "Volume Control". Select "Options" and then "Properties".
- Then check the button next to "Recording" then click OK.
- You may also have to change your setting under Mixer Device.
- Now the Recording Control screen should be up.
- On my computer I selected "Wave Out Mix". Click on the green phone in Google Talk and call your friend.