[Zubersoft]

I think this problem would be solved by a feature I plan to add at some point: song versioning. The idea will be that you can have multiple versions of a song, and each version can have different files, metadata, etc. You can choose what is different in each version. You can choose the default version to use when the song is loaded by itself, and a different version of the song when it is used in a setlist. Switching between versions will involve just tapping a dropdown on the library screen (a new icon that would be at the right side of each entry) and selecting the entry that should be used for the current view. On the songs tab, this would pick the default version. In a setlist, it would pick the version to use for that setlist. When editing a setlist, you would be able to pick the song version to use there as well.

As for showing the audio file title in the title bar, I really don't think there is room for that. On most tablets, there is barely enough room for the icons and the song title. Is there a reason you can't leave up the audio file in the minimal layout mode so that you can view that information? To switch layouts, just tap the number icon in the audio player.