Matt, I've heard guitar samples that are panned exactly like that. I
bet that's what you're hearing. Neat effect if it's just an
arpeggiated chord. But if you need a real guitar performance it
doesn't work very well.
Cheers, Rick.
P.S. Tons of good info in Matrix's post, although it doesn't even try
to answer Matt's question. Obviously a cut and paste, but from where,
and why? Wassup Kevin? R.N.