The (a)MUSE, was an application released around 2001 through originofsymmetry.com
Sizes and Features
Depending of the "Size" the application, it features different things:
- Small [a]MUSE player:
Contains streaming audio and a few functionalities.
- Big [a]MUSE player:
Contains streaming audio, news, tourdates, Ecards, chat and more 
If you emailed your friends you could get a bonus track.
MuseTV - The enhanced element that comes with Origin Of Symmetry.
- Muse. (2001). 'OriginOfSymmetryDotCom – Press Release'. Muse. Retrieved 2014-09-28. [verify]