Downloaded every zip looked in them and scanned with AntiVirus.
Some of them just contain exe files for chords, sequencers etc..
You can just delete them as you shouldn't need them.
But they are overwhelmingly BIAB song files and midi files.

Attached Files (Click to download or enlarge) (Only available when you are logged in)
Avira-SGU.jpg (83.31 KB, 512 downloads)
Download-SGU.jpg (348.48 KB, 513 downloads)