Stereo sound in a Mono 12Bit Sampler....

No sound wav can have more than one point of origin, thus there is no such thing as a stereo sound.
Stereo is a man made creation, one however that we have associated very deeply to our perception of sound.
With that said every stereo sound you have ever heard was a mono sound made to sound like it was basically coming from two or more points of origin.
Two easiest way to do this is to?
1) differ the left and right signal with filters or EQ's etc so that they are perceived differently
2) use delay to vary how and when the elements of each side are heard

In either case you are simply trying to give the mind time to hear anbd process the difference.

However if you lack the means and/or understanding to do it properly, just run it through a stereo effect.

People have gotten heavy about stereo sampleing without realizing that unless there true distinction between the two channels it's a waste.
Of all my samplers the only one I every sample stereo on is the VP and that's only because it's ususally used to resample an entire bar from multiple units or a vocal piece.

MarkWolbirgh wrote:Ummm.......in this song im trying to sample, the drums are panned hard left, instruments hard right, and bass centered...

So I can't just sample oen side, and add an effect and wallah..it sounds like the original.

You are trying to sample something that someone has already taken the time to make into a stereo aspect.
Your desription would actually be just what you said three different elements (samples) in reality, that some one has put into a 2-track (L/R) scheme.
That's why lots of people mono sum into their sampler input so they can capture the left and right into a mono sample that someone has taken the time to make in to 2 track.
Seems kinda odd to want to capture the sample like that any way, if a case like that existed sampling the bass, instruments and drums as 3 different sample would allow you to flip it a million and one ways that having them in the originally combined and panned form wouldn't.
Would be damn close to having the master to work with.
But hey if stereo is your thing then cool, just never loose site that it was created not something that really exist.
They originally wanted to simulate the positioning of the instruments physical location when playing, then realized it could be used to add depth and width.
Later it just became the everyday norm and a way to manipulate sound as an effect.