If all else fails (until the GUI gets updated), I was thinking you could create shortcuts to your songs in Explorer and copy or move those shortcuts to a folder in a location of your choosing called [songlist1] or whatever. Then if the checkbox in the BIAB options>preferences>display setting to allow multiple instances is unchecked, you can click on the shortcuts in the folder that you made and they will open in BIAB. Use Alt-Tab to switch between BIAB and your new folder. Just a thought...