Originally Posted By: Pipeline
The OR option is for earlier versions:

OR Save Songs As > SGU > MuseScore > Open > Export > MusicXML > Sibelius > Open

Yep, BIAB didn't support MusicXML till 2016. It's a good idea to list your exact version in your signature so that responders have the info they need.

musescore has a limited ability to open BIAB files saved as .sgu. Unlike MIDI (.mgu), this will be backing tracks and chords only. It may do what you want or not. Fortunately, it's free.
musescore
Otherwise, you're back to MIDI and editing from there.

If that's not acceptable, probably time to consider an upgrade. There's a new, 64 bit version for Mac on its way but only PG Music knows when it will be here other than sometime in 2019. Rumors are that the beta version has yet to be released so it won't be really soon.



BIAB 2024 Audiophile Mac
24Core/60CoreGPU M2 MacStudioUltra/8TB/192GB Sequoia, M1 MBAir, 2012 MBP
Digital Performer11, LogicPro, Finale27/Dorico/Encore/SmartScorePro64/Notion6 /Overture5