dave mirra bmx need help!!!!!!!!!

i downloaded dave mirra bmx and it has unpack.exe with it and inject.exe i unrared the game then i ran unpack then injected the wav. files to the cdi then i used diskjuggler 2.0 to burn the game it burned it fine but when i put the game in my dreamcast the screen is a cd spinning with 11 audio tracks could someone tell me what is wrong!!!