Hey Casper,
very cool website with a lot of usefull informations !!!

I just found the comments here where are you speaking of the saw looper...i modded it like suggested at the getlofi website with a 2n2222 transistor...the loop works,but very poor...it just loops a very small part of the sample...will your schematic fix this problem ? 
Any help is much appreciated !!!

Cheers
Wayne