I'm using several 3rd party packages and I think that's what's giving me trouble.

Here's my manifest file:
Manifest-Version: 1.0
Class-Path: basicPlayer2.3.jar jl1.0.jar jogg-0.0.7.jar jorbis-0.0.13.jar mp3spi1.9.2.jar tritonus_share.jar
Main-Class: MainFrame
Created-By: 1.4.2_05 (Sun Microsystems Inc.)
It keeps telling me it could not find the main class. However, when I remove any dependencies on those other packages from my code and rebuild the jar file, it'll run.