what does the feature called "Stero line input for mixing in audio sighals from sampler, CD player" allow me to do? To me, this looks like the cs2x can be a sampler, in that it accepts sounds and you can add to them using the additional voices the cs2x provides. Am i correct? what else can I use this feature for? is this feature similar to that found on some of the more expensive and expandable keyboards? If this feature is what I think it is then the sounds you can get from the cs2x would be unlimited because you could load sounds from a sample cd, wav files etc. Someone please correct me if i'm wrong.

I believe it is just a pass-thru input. I have a CS1X and I use it to connect my second keyboard so that I can connect them both in my one channel (Input) practice amp.