Crossfade Loop Synth

NB this is an old, free precursor to this.
This is a simple AU instrument - it loads a sample from disk (in AIFF, SD2 or WAV format) and plays it back in the classic sampler way i.e. higher notes get shorter, lower notes longer.
It loops the sample using a crossfade (hence the name). The idea is to make it easy to produce smoothly looping pad sounds from pretty much any sample.