Apparently I'm mis-remembering Scour, but Audiogalaxy was definitely just a FTP site index. FTP isn't hard to use, but finding the files you were looking for and downloading them via FTP servers were definitely more difficult pre-napster. There weren't many that were just open, you'd have to upload content to be able to download something else. A lot of them were 10-1 ratios, or people were looking for specific things to trade.