Howdy.
Hammerhead is my favorite drum machine. There's a ton of drum machines out there, but I really dig this one.

For those interested in modifying CUSTMGUI.DLL, below are the parameters for each sample in it. You can edit the file as a RAW file in Audacity. I use a LABEL track to make things easier, then just add silence (20 seconds) and place each sample into one of the sections. I managed to make a good Roland CR-78 drum kit.

Also, using a HEX editor it IS possible to change the bank names as they are in ASCII. Not sure about the stability of the program after you change them though. Anyways...

This goes:
NAME::SAMPLE LENGTH::(START POSITION-END POSITION)
Hard BD::0.29299::(0-0.29299)
909 BD::0.193015::(0.29299-0.486005)
SubBD::1.239408::(0.486005-1.725413)
JungleBD::0.22918::(1.725413-1.954593)
BlipBD::0.191945::(1.954593-2.146538)
Hardcore 909 BD 1::0.353591::(2.146538-2.500129)
Hardcore 909 BD 2::0.403877::(2.500129-2.904006)
606 Snare::0.181503::(2.904006-3.085509)
Jungle Snare::0.189421::(3.085509-3.27493)
Hard Snare::0.379933::(3.27493-3.654863)
808 Snare::0.089296::(3.654863-3.744159)
Ac. Snare 1::0.245913::(3.744159-3.990072)
Ac. Snare 2::0.195904::(3.990072-4.185976)
909 Snare::0.156146::(4.185976-4.342122)
909 Clap::0.228034::(4.342122-4.570156)
Snap Clap::0.22169::(4.570156-4.791846)
Rimshot::0.096165::(4.791846-4.888011)
909 Open HH::0.469689::(4.888011-5.3577)
909 Close HH::0.037528::(5.3577-5.395228)
909 Pedal HH::0.110208::(5.395228-5.505436)
Ac. Open HH::0.783318::(5.505436-6.288754)
Ac. Closed HH::0.068155::(6.288754-6.356909)
909 Crash::0.922302::(6.356909-7.279211)