Wheres the folder?

I just downloaded some drums they came zip folder wav. format. when i move the drums from my pc to mpc i send file to. when i go to load the drums i go to mode>pad2> and then im suppose to see load and under that I do not see a file. the only time i see the different drum sounds is under sample. It wont let me preview the sound and also what seems weird is that when im scrolling through after i push pad2 i will see the name of the folder for a second under Delt: then its gone. anyone know why i cant see the file name in the folder?

make sure the files are 16bit 44.1 khz and that the names aren't longer then 16 characters