Zina is a graphical interface to your MP3 collection, a personal jukebox, an MP3 streamer, a Podcaster. It can run on its own, embeded into an existing website, or as a Drupal/Joomla/Wordpress/etc. module.
- id3 tag editor
When you are looking for an easy to use webinterface for your music collection stop looking. This is what you want. The integration in Joomla is also highly recommended.