Did Rapture 3D come with the installation, and do
I need it to play dirt2?
You're browsing the GameFAQs Message Boards as a guest. Sign Up for free (or Log In if you already have an account) to be able to post messages, change how messages are displayed, and view media in posts.
It's not required to play. It's the software the game uses for surround sound functionality, and the game gives you the option to use Rapture 3D (Software audio) or to use hardware audio if you have a dedicated soundcard in your computer.
If you're using onboard audio, I'd say keep Rapture installed and use it for the game, but if you have a soundcard you can uninstall Rapture and use hardware audio instead.