EXS 24 Logic Sampler Users Group

I am running OSX and the EXSP24. I am having problems loading samples that I have 
created myself. These are .wav and .aiff . I can't get the sounds to show up in the 
scroll down window. I have 2 folders with my EXSP24 samples which are the 
"exsp24samples" and the "EXSPFactorySoundset". The only files that appear in the 
exsp24 scroll down window are the ones in the factory soundset folder with the 
extension .esx . Do i have to convert my files? I am so lost and i've been tryin to set 
this up so i can bring in my own samples and trigger them through the keybaord. Can 
anybody help me. Thanks