Well I've changed the folder names a bit I've removed any "." in venue names so "Boston.Garden" is now "Boston Garden"
Before the first "." is the date "gd77-05-07" (the gd stands for grateful dead) after the first "." is the source "sbd" after the second "." is the venue "Boston Garden"
Here are a few examples
gd77-10-07.sbd.U of New Mexico.flac16
I have about 250 shows in this format, I have used mp3tag to mass add artist and year tags, but date and venue as album titles looks to be a very tedious cut and paste project.