TJ Jr.,
The S2000 is what I use for drums. This sampler can't directly deal with wavs but there is a program for PC called MESA that allows you to import wavs from the PC into the S2000. You'll need to add a PCI SCSI card, but these are real cheap. The program is free and is available at:
www.Akaipro.com. I'm using the software with Millenium, I'm not sure if it's compatible with 2000 or XP.
As far as samples, there are tons of up-to-date samples for free download online. Start here:
www.samplearena.com, click on the section labeled SITES and you'll find over 100 sites all offering free samples. There is a link you'll find on that site called Kalava, or something close to that. The drums on that site are the bomb, they have sample packs from
the Roland XV-5080 and all the legacy Roland drum machines.
As far as recording beats I personally record drums on one track, although occasionally I'll add a percussion section on another track. I do this because my sequencer only has 8 available tracks, and in that I'm a drummer I like to play the parts out live. If you take sounds into the sampler and tweak them before using them you won't need to separate the tracks for recording because they will already be where you want them to be as far as processing is concerned.
Hope this helps.
Stray