60GB backwards compatibility owners, does the sound clip on your 60GB PS3 when playing the _PS2_ version of Midnight Club 3 (Dub Edition Remix)?

I have some time on my warranty and would like to know if it's a problem across the board with this title or if my system may have a problem with the emotion chipset (solder joints, etc).

Search of the forum and Sony's compatibility website hasn't turned up anything that matches. Other than the sound, gameplay is fine on my PS3.