For this I use Recycle or Wavesurgeon to automap the samples via SCSI.
Basically I have my kits all as single wave files with gaps in between each hit on my PC/Mac and then I dump them down as a mapped kit automaticaly into the Sampler. In The above apps you set the threshold to detect the sample "gaps" start and then edit the start positions if needed if the auto detection of the drum hit samples start in the wave file does not quite latch (e.g. for a long attack sound).
What I like about this is once I've created a kit as a big chunky wave file (e.g. taking radio snippets, glitches, kicks, snares, effecting a section, compressing some, truncating, disco stabs and all sorts of nonsense), I can edit it as a single file to the max in Soundforge/Recycle/Wavelab/Alchemy whatever, then dump it straight into the sampler in about 1 minute over SCSI and use it immediately - very refreshing technique. With Zeos you can then edit the preset also via the PC to create some very strange and interesting drum kits indeed. This can also be done for basses, speach, phonems, slices of filthy phone taps ;-) you name it - anything that inspires.
In terms of your use case:
Since the Macbook SCSI is still a bit hit and miss and you have XP, I'd use this on XP. The OLDER Recycle 2.0 is what you need and you can still get it off propellerheads- you buy the latest version and then request the previous version online. I've done it, and they are pretty responsive. Wavesurgeon is also fine (as is Mobius) but its slightly more touchy about the SCSI connection (you need to ignore some of the errors that pop up when using XP SP2 since its not been updated since about 2003). Its from Squarecircle software.
The other alternative is to use the FAT32 import on the E5000, create a preset with say loads of individual samples assigned to each key already in the Emu, then by a file copy/replace each individual sample in the preset with your sliced up kit file. More tedious, but could be automated too i.e. kind of a "copy over" the "dummy" samples in the kit.
When I finally get around to adding my removable IDE drives to the EMU, I'm going to experiment with some batch processes to do this to allow sample mapping to a predefined preset template so sound "maps" can be created. Translator can also do this with their GUI - edit the samples straight up.
To get them back to the E6400 - perhaps a SCSI-SCSI transfer or more easily a simple "Save" onto an EOS format ZIP and then load it that way.
Of course you'll still need to edit the preset parameters, filter mapping, cords etc, as normal.
Make sense ?
M
P.S. What I want to see now is Zeos allowing offline editing of patches..come you ye open source java dudes....!
's'allbollocksinnit.