I have Livesplit, but I've never used one before. How do I set it up?

Never mind, found out how. Been using it for my runs =)

in that case, how DO you use an autosplitter? and is it a LiveSplit only thing?

yes its only for Livesplit

Lucky_Hamburger, the autosplitter is configured in the "layout" for Livesplit. You have to download the resources from the Resources page, and then when you open the splits, open the included layout, as well. Then, go to "Edit Layout" and change the file path for the Autosplitter to where it's located on your computer. After that, you should be able to use it for No Skip just fine.