http://intua.net/
You can add samples via remote server, and also send tracks and kits through wireless connection to other users. I got the app yesterday and played around with it... two thumbs up! The accompanying app for the remote file trans just became available today so I have yet to import my own kits and samples, but as far as sequencing and editing ability on all your samples... it's waaaaay solid. Purely a sample based production app, with unlimited channels in the midi sequencer, but only one pad bank to trigger from. You can export your loops as wav files and trigger em on the pads similar to loop capture on the 555. So technically you can find work-arounds for the limitations.
This app is the whole reason I copped my ipod touch and I figured I'd share it in case anyone on here doesn't know about it.
I can already tell it's gonna get me in trouble at work!
