a couple of house producers who i used to share a gaff with would edit tracks for use in their sets, although the edits always sounded great and went off big-time when they played them out, i found myself questioning whether it was 'musicaly ethical'...

still not sure how i feel about it, i guess if it's just the odd track in a set then fair-do's, but still, if i was a producer then i guess i would be a little miffed that someone had edited my track without permission...