I am now trying to test the mpe library from daniel schiffman with processing,

I got the library but i dont know if i have the correct mpeServer.jar.  I tried to run that with windows CMD, however it couldnt work and gave me "invalid or corrupt javafile mpeServer.jar"

I tried that on two computers, same issue.

does anyone know what's wrong here? do i need to install anything more? i already have the newest version of JRE.

thank you!