If you intend to play sounds in your presentations, you'll need to run an audio cable from your computer to your house sound system. But remember that all sounds from your computer will then be played to the sound system, including the error and alert sounds Windows makes. If you don't want the audience to hear these bells and beeps, you should shut off the Windows sounds.
To shut off Windows Sounds:
1 Choose Start >Settings > Control Panel > Sounds to open the Sounds Properties dialog.
2 Select No Sounds in the Schemes field's drop-down list, then click OK.
