FoxyTunes is an Extension for Mozilla Firefox. It also supports the Mozilla Suite and Mozilla Thunderbird. It allows you to control your media player without leaving the browser.
The controls are positioned on the status bar or one of the toolbars, so no extra space is wasted. FoxyTunes has several nice features. You can control the playback, adjust the volume, and see what's playing. Many more features are in development, among them advanced music-related searches.
Features:
Supports 18 media players - more to come!
Collapsible panels
Volume controls
Currently playing track information
Automatically launch your player when needed
Pop up and hide the player window with a click
Correctly shows track information encoded in any language, supports Unicode
Automatically finds and displays album covers
Music Web searches - lyrics, images, info, video and much more