[tru]

I don't really want to change the behavior of the library window like that, as it currently supports navigating any library tab, so it would get messy and confusing trying to support a history of loaded songs. Instead, this will probably be best handled by adding support for tabs for loaded songs/setlists, as many users have requested that. Then you can just switch between the loaded tabs as needed.

Mike

Thank you for the feedback. 
Of course, also tabs would do it.

Tobias