"As for copyright?"

Hey, it might be fun to rip samples from commercial recordings for your own personal use, and you can probably get away with using them in a live gig. But no one who is going to produce anything on a commercial level is going to do this without getting a license from the original publisher. Otherwise, you are indeed breaking the law and are asking for trouble down the road. That's why it's SOOO hard to get clean samples, loop libraries. And why so many that sell them advertise "clean". This way they are telling the end user they are not ripped, so no copyright issues to worry about.

Another cool way to get fat original sounding drums is to simply layer two kits at the same time from your favorite sound modules/samplers. I combine a hip hop kit with a nice acoustic kit and get an excellent sound! Works even better if you "ever slow slightly" delay the timing on one of the kits, and pan 1 kit a tad to the left and the other kit a tad to the right.
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Yah I know, stupid ain't I?