Windows operating system instructions:

1. Open your QuickTime Player by double-clicking on your Desktop icon or by going to Start>Programs>QuickTime Player.
2. Once your QuickTime player is open, open the QuickTime or QuickTime Settings control panel.
3. Select Connection Speed. Your player bandwidth settings will now be displayed.
4. From the Connection Speed drop-down menu, select your actual connection speed - if it differs from what is already displayed. This will set your bandwidth limit for the player. Once again, to test your actual internet connection speed, click here.
5. Close out of your settings control panel window and your QuickTime Player should be ready to go.
6. Try listening to the audio material again by clicking on the file’s link.
If you are still having problems, visit the QuickTime Player technical support site by selecting one of the following options.

Contact QuickTime Player Technical Support
http://www.apple.com/support/quicktime/
QuickTime Player Overview
http://www.apple.com/quicktime/whyqt/