The forward slashes make it impossible to download the files. A work around is to right-click a file and open it in a new tab (I use Firefox; in IE you would have to open it in a new window) and then change the forward slash in the address (which will show up as "%5C") and change it to a backslash. Very tedious, but it works. Could Finster post a fixed link or maybe add a zipped file with all the sounds (sorted by directory)?
BTW, if you use Firefox download an extension called Downloadthemall! (
http://www.downthemall.net/). It allows you to download all linked files on a page (very handy for those sites with a lot of sound file because you don't have to manually click each file). You can even use filters to download only the files you want i.e. sound or video files.