Computer Help and Support

I don't know what model of Lowrey Jubilee you've got, but a quick google turned this up:

https://www.manualslib.com/manual/1895101/Lowrey-Jubilee-Lc-30.html?page=71#manual

Offhand it seems like they can record performances to the disk .. and even merge in
additional performances (recorded to accompaniment & upper tracks) for playback later.

So what's being recorded is definitely not a simple audio file (not raw or MP3). My guess is
that it's some sort of MIDI being saved. And the manual references being able to
play back its own formatted floppies or something called SMF (a MIDI standard file format).

I'm going to guess the floppies are not "standard" MSDOS format or anything semi-normal
you could read on a PC. You'd need some software specific to Lowrey Jubilee to read the files
off the floppy into your PC (even after you had the physical drive).

Oh my, someone sells a hardware replacement for the floppy drive (to replace it with a USB thumb drive):

https://lowreyorgan.uk/product/floppy-disk-emulator-fde-1000/

Hmmph. The warnings about using only thumb drives they sell you is a big red-flag to me. Sounds
much less than reputable.

But ... the back of the unit appears to have some standard MIDI connections. You might be happiest just
using some MIDI cables to connect to a computer (with a MIDI interface and software) to record and playback.

Or forget saving things digitally and use the aux-out connectors on the back to your tape recorder

Do have fun!