What you need to do is get in a ship level and do free play.Then get in any rapid fire ship. When you are in the air, shoot other tiny vulture droid ships.For each one you shoot,you will get about 25 purple studs (which each purple stud is worth 10,000!)Enjoy!Hope I helped you!
At the 'Character' select screen there is an empty spot at the bottom right. This is where Savage Opress should be. To get him you must enter the code MELL07 by selecting 'Enter Secret Code' at the 'Exras' menu and then pressing A.
Go to the main room on the good guy ship,the one with The glass that you can walk on,pick the two characters "Yoda" and "Cad Bane." Now (with you as Yoda)go to the left side of the glass floors. Walk to the end that is closest to the window (but stay on the glass), If you wait about four seconds, Cad Bane should be underneath you (with arms and legs waving wildly) and As I promised...he is stuck in the floor!You do not Have to reset the game to get him out again...just move (as Yoda) to the farthest right corner (you don't have to stay on the glass now)or go into the elevator...either way it works. (I don't know if this glitch works on the DS,but you can try...and I don't know if this glitch works with any other characters) =)