What do I do if I have QuickTime installed, but nothing plays?
- Windows XP
- Windows Vista
Check QuickTime's settings and make sure it is configured to play MIDI files in your browser.
- Open QuickTime and go to Edit > Preferences > QuickTime Preferences.
- Click the Browser tab.
- In the bottom of the resulting window, click the MIME Settings button. The other options on this screen will not affect how Wolfram|Alpha uses QuickTime.
- In the Set Program Associations control, check the option "MIDI file", which associates midi files with QuickTime. The other MIME types on this screen can be ignored.
- Click Save and then click OK.
- Restart your browser.
If you are using Firefox on Windows and these instructions do not help, you may be running into an issue with a corrupt plug-in file. Please go here for more information.

