information about my system

hi,
i woul like to know if my system is good enough to run dolphin.

i have a pentium DUAL CORE e5500 2.80

and a graphic card sapphire ATI RADEON 4650

i have tested the program , but i have audio problem with zelda twiglight princess and with star fox assault,

i've tryied to change the audio setting , but i still have the problem.

what can i do ?