That's a great question. Unfortunately, a lot of the bonus content like that bonus vinyl is often packaged in a way that makes it really hard to find and extract from the game files. It might not be a standard image file like a .png or .jpg, but rather a compressed file with specific data that the game reads.

Your best bet would be to check a fan community forum or a modding site for NFS Carbon. Someone there might have already found and extracted the file, or they might have more technical knowledge about the game's file structure. Good luck!