new to logic/ exs24

padders
Ive just got a mac and lg express 9 its look beatiful and I'm loving the automation, however i having a few teething problems.

I a bit confused by the Exs24. There appears to be f all the manual . When I load up a sample let say a pad that is 2 bars long. I only want to play it for a 1 bar then play another note. However even if the midi note is only 1 bar long it contunie to play for two bars.Is there anyway can I get the sample to stop as soon as the midi note does? When I used kontact it did this automatically for me.

Also I have tried downloading a few of my favorite free plugins that I used on PC. Such as blockfish and a solid state compressor. I have downloaded both the AU and Vst versions but they dont appear when I load up logic. I m pretty sure they in the right folder as some plugins do work such as voxengo span.
ksd
hey...i'm using the exs24 sampler in logic...when you open it click on edit and under playback make sure that only "pitch" is activated. if you have also "one shot" active then it will play the whole sample from the beginnig to the end.