You take your FINISHED mix and duplicate.
Next, invert this duplication and reverse the panning.
Then you mix together (equal levels) your original with this new inverted/reverse-panned track and bounce (it's an extremely weird sound that appears 'outside' the speakers).
Next, import this bounced track and mix it in WITH the ORIGINAL MIX (i'm at about a 6 dB difference between the mix and this 'effect' track). Also, make sure to mute the inverted/reverse-panned track, as you won't need it at this point.
I'm using this effect on this "church-guy's" project - trio singing mostly with piano - hallelujah. It makes the overall sound wider than the speakers... weird.
Is this akin to installing MAC OS X on your PC? It's probably the same as that 'stereo enhancer' on T-RackS, that I hate.
Anyways, either hot tip for the day or bring back mono.
Now, let's all get back to those overly-exciting political topics.
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Hope and change this.