just a guess, but it looks like cd-r transfer of the DAT master of the (one?) audience recording of that show.
you can download it here: https://archive.org/details/tsp1992-09-01.okm.flac16
not really sure why this is under “official cd releases”, or why it’s part of the collection at all. i personally wouldn’t add it to the collection.
i think the DAT master has more right to be part of the SPfreaks collection, but even that item i personally wouldn’t add. (just a matter of limiting what gets added. if you start adding DATs and cd-rs of audience recordings, not coming from the band or the record label, there’s no end to it.)
or i’d put both of them under “unofficial”.