Peace Love Productions has released Dubstep Vol 1 a collection of DJ Tools exclusively available on Beatport.com.
This set includes 21 seamless loops for producing Dubstep.
Sounds include Basses, Beats, Effects, Stabs, and Synths. Tempo and key information is notes in the file names. Loops are available individually for $1.99 and the entire set is available for $16.99
Dubstep Dj Tools Vol 1 is available to download on the Beatport website.
More information: Beatport