You can go to the forum and copy a link

then paste in the URL and hit enter

If you get any errors on Biab Open:
Open Song.musicxml in Musescore then Export as uncompressed .musicxml then open in Biab.

There will be an musicXML link to download and in Biab Open or Open Special.
You can also play it back in the page.
Cerio's guide:

If It's a set list they will show in the Sheet dropdown.