Audiobus: Use your music apps together.
What is Audiobus? — Audiobus is an award-winning music app for iPhone and iPad which lets you use your other music apps together. Chain effects on your favourite synth, run the output of apps or Audio Units into an app like GarageBand or Loopy, or select a different audio interface output for each app. Route MIDI between apps — drive a synth from a MIDI sequencer, or add an arpeggiator to your MIDI keyboard — or sync with your external MIDI gear. And control your entire setup from a MIDI controller.Download on the App Store
Audiobus is the app that makes the rest of your setup better.
Lazy man sample drumkit test/ and cleaning the lib
open all your drum sounds from the kit in VLC (free for Mac/linux/win)
go to vlc menu set playback to repeat all and random playback
now it plays all the sounds back in random order
now its its easy to make out sounds that don't fit,
just delete them ...