When I bought the Lite On DVD Rom drive it came with one audio plug but when I look at the instructions on how to install it, it says I need a power cable and IDE Cable do I have to buy those things.
Well most PCs out there have a two connectors on their IDE cable. If this is just an additional drive, and if your computer currently only has one drive, chances are there is room on the IDE cable for the LiteOn drive. There should also be a few extra power connectors from the Power Supply for your new drive.
Look here for some installation help: http://www.helpwithpcs.com/upgrading/installing_cd_recorder.htm