* Get audio working on clueboard/60
* add keys for music mode
* Change doubles to floats
* add keys for all the songs
* revert to the default startup sound
* Remove music mode until we can figure out why it crashes
* Clarify the license for files we have signoff on
* Update against the currently signed off files
* Remove unused and not clearly licensed headers
* Replace an #endif I accidentally removed while resolving merge conflicts
Jeremy Bernhardt