Is there a free music catalog PHP script?

You could make one pretty easy this would avoid having to link back to the scripts site, you can make it what you want also.

Here is somethings I have found quick, not sure if they will do...
http://www.codango.com/php/dir/webapps/ecommerc/catalogu/


Good Luck

Check Hotscripts.com.

Here's the link to the PHP music library scripts:
http://www.hotscripts.com/PHP/Scripts_and_Programs/Music_Libraries/index.html