When you run across a Quicktime, MP3, Real Media, or other media link on a web site, Firefox typically offers to download the file, open it in an external player, or opens a new tab and starts playing it if you have the proper plugins installed. But what if you like to open all of your files using Windows Media Player or VLC, so that you can close Firefox without interrupting playback?
Media Player Connectivity is a Firefox plugin that lets you assign external media players to file types. So any time you click on a media file, it will be opened in the correct player. The plugin supports a ton of file types, including OGG, MP3, AAC, RAM, WMV, WMA, and playlist files like PLS and M3U.
The latest versions of Media Player Connectivity work best with Windows, but Mac users can download older versions of the plugin which should work with OS X.
Open web-based media links in external media players - Download Squad