Great work!! I'm looking for a new feature:
I have a CAS server and i wish to integrate it with subsonic. CAS is a java App wich offers SSO (Single Sign On) for WebApps.
Here how it works:

http://www.jasig.org/cas
The problem is the compatibility with the android/iOS client. To get this working, subsonic MUST operate directly SSO.
It would be great if this feature will be available!
Kind regards