sample selector patch

Essentially I need a sampler patch which would allow, for example, me to load 100 loops of equal duration into it. There would then be a control slider to select which sample is being played. Only one sample need to plays simulatenously (possibly two if they are crossfaded). So the end result being, I have one slider which I can move where at one end it would play sample #1, and the other end sample #100. As you move the slider it switches through different samples, playing from the same point (so if you move the slider from #1 to #2 while it is half way through playing sample #1, it will start playing #2 from the same point half way through).

So I was wondering if anyone can point me in the direction of such a patch? Otherwise if there is nothing similar i'll look at building it myself :-)