I know this is probably the easiest thing in the world to do, but for whatever the reason, I seam to be having trouble. Can someone give me a quick step by step (not too step by step

on how to add your own music for your show it slideshows? I tried doing one last night, however could not get it to work right.... I'm not sure if I used the wrong format, or what.
Your help greatly appreciated, and sorry for the stupid question