> One thing I used to do to achieve this was to make sure I did any   > cuts for the extra segments in a beat, say 1/4 note, 1/2 note,   > whatever. Helps disguise the edit. That, and repeating different patterns. It will start sounding like a loop as soon as the listener hears any regular repetition in the sound, but if you cut it up in a few different lengths and glue/crossfade them nicely together, it will sound a lot more real. Maurits.