when i went i found a weekly dnb night called Cheeky Mondays (obviously on a monday), at WINSTON (Warmoesstraat 129 - 131, AMS red light district) was about 7 euros to get in. http://www.winston.nl/club/drum-bass
you could also check out www.amsterdamagenda.info in the "whats on" section click "amsterdam agenda" theres a calender of things that are on, but look around the whole site as it has alot of useful stuff on it
i didnt find anything on a fri/sat/sun but, if you go to alot of the coffee shops some of them have flyers for nights that are on, i was lucky enough to stumble across 1 playing dnb and i picked up a cheeky mondays flyer.
also this is a map of all the coffee shops in dam.. Enjoy!
Junglist#1, the OP's going in October not November.
Anyway...I went Melkweg (Leidseplein) one Saturday a few years back and Drum & Bass was being rinsed, not by anyone i've ever heard of though, still had a wicked night though....you might wanna check their site as something might be on round the time you go.