PCCheats
Star Wars: Episode One: Racer

Walkthroughs and Guides
Outside link to all the information you'll need on this game, and more!
Courtesy of: Gamefaqs.com

MORE MONEY!!
On the screen where you purchase POD parts, press [Shift] + [F4] + 4.
Note: This can only be used five times after completing each race, regardless of outcome.
Press [Ctrl] + [F4] + 4 for even more money.

TAUNTS
Select The Tournament Mode, highlight 'Start Race' then press [Space] at the menu.
An intermission that features your character and opponent taunting each other will appear.
This will not work if your character is the track favourite.

UNLOCK SEBULBA
To unlock Sebulba at the Racer Selection screen, successfully complete the Galactic Circuit.