1998 Sonic Foundry ACID sample pack Free Loops 4 ACID. Contains 100 seemingly unique loop samples I so far haven't heard in any other Sonic Foundry pack. Disc had 3 very small uncorrectable read errors when ripping to BIN / CUE but for what I could hear it has not affected the material on the disc in any noticeable way. This one is a bit of a mystery to me at the moment, I haven't managed to find any mention of it on Sonic Foundry's old archived website or anywhere else online, and it appears to have been some kind of freebie giveaway, possibly given away in stores, as a bonus purchase item, or maybe some kind of email / mail in request.