All the rap beats you wanted, but could never find.
Most 3-4 min. insturmentals, have voice-over sample echoes,
of some tone from preventing freestylers from
using motivational music for thier own purposes.
These beats are zen in quality, and have no
tones, that would not prevent you from using the beat for
your own creativity purposes:

http://rapbeats.tripod.com
http://raploops.tripod.com
http://rapwavs.tripod.com
http://insturmentals.tripod.com


*all you rap freestyle battle beat needs are here, gentlemen.
*no more trying to fing beats. If you can loop a wav, might I suggest a quality rap-loop, from the collection above.