For QuickTime 6.5.2 or earlier

  1. Open QuickTime Player.
  2. Go to Edit > Preferences > QuickTime Preferences. 
  3. In the first drop down box, select Sound Out. 
  4. Under Choose a device for play back: choose WaveOut (if you have more than one WaveOut choose Windows preferred device or you’re sound card.


For QuickTime 7.0 or later

  1. Open QuickTime Player.
  2. Go to Edit > Preferences > QuickTime Preferences. 
  3. Click on the Audio Tab. Put a check next to Safe Mode (waveOut only).