LP = Let's Play. Basically a video of somebody playing a game (usually in real time). Includes them talking about the game and stuff while they play it, and often has a camera feed of them in the same video so you can watch their reactions and stuff.
Rwolf wrote:...it could be thought someone finally had invented retro gaming on vinyl records...who needs CD/DVD:s when there's LP:s?
We had games on cassettes in the 80's. There was also this track on an LP that contained data that could be read by a modem (note: loud audio. Watch your volume). The message you see is the processed data.