Hearing no music?
Make sure you have the folowing:
The latest versions of Netscape and IE should both handle midi files with included plugins. If not, try installing one of the above plugins.
Make sure your soundcard, speakers and other audio hardware is functioning correctly. If you do not hear any other sound from your computer, you may have a hardware problem.
If you still cannot hear anything check to make sure the MIME-type handling in your browser is set correctly. You should find these settings in the preferences of your browser under 'Applications' or 'File Helpers'. Make sure the 'audio/midi' MIME type is set to be handled by an appropriate plugin. For more information on how to set file helpers, check the instructions for your browser.