Xnoise is a music player meant to store large music collections.
Pro Simple uncluttered interface
Xnoise displays a user library in a simple and uncluttered interface, making browsing of the library easy to navigate and view.
Con Development has stopped
Lead dev stepped down citing not enough time to spend on development.
Con Buggy Interface
Often interface elements did not show up or did not work correctly when clicked. No other gtk+ app had similar issues.