Found a link with some Nocturnus clips from Thresholds...

http://www.emusic.com/album/10590/10590665.html?fref=148870

Forget the first track, stupid Lovecraftian demon summoning malarky... as per usual, the best bits are not represented on these clips but they give you an idea of what the rest of the album is like (a hell of a lot better than these samples!).