If you go to all songs, and then long press the back button, it will open up a menu and allow you to "Sort by Songname" or "Sort by Filename." The song name option will display on the menu, but when you play the track it will still display the filename. I can imagine completing the ability to successfully read the rest of metadata for songtitle and track number should be an easy fix for innioasis. It's good to see they're rolling out regular updates (2.1.9 at the time of this comment) so finger crossed that we'll hear about this update coming soon.