N. Oxide Gameshark Code Tracks?

So recently, i saw a video of someone play CTR using Oxide.
I was interested. So i bought a gameshark to use Oxide.
Well, i did it and was very happy.
What i want to ask is, in what tracks can you play using Oxide?
I'm very confused since i saw a video of someone using Oxide in Oxide Station, but when i try it crashes.
And also, can i use it in adventure mode?(racing, challenges, boss races, and free roam)

THANK YOU.....