3-4 Years trying to id!! Please help id these Tracks!!

[Luben]

There are 3 tracks here that ive been trying to id now for a very long time, ive cut a section from each track and uploaded it.

http://www.divshare.com/download/6307299-bcc

http://www.divshare.com/download/6307286-6c6

http://www.divshare.com/download/6307269-686

Also i know the id of this one but really want to know where it can be found?

Cass & Chable - opiate (4x4 mix) (first heard it back in 2004)

http://www.divshare.com/download/6307267-4b1

Please help!!!