You probably don't really want to run Emphatic unless you REALLY want to view your song lyrics. It does other useful stuff, but it's complicated to configure if you don't know what you're doing.

jEmplode is easier. Just install the latest java runtime from the sun website, download the .jar file from the link at the top of the page, then double click on the .jar file. It should open and be pretty similar to emplode.

EDIT: gee...that's about the same instructions as on the jEmplode site.