Nevermind cheema201...turns out there were some other default settings I had to change to fix the audio as well. I found better settings for Metal Gear Solid (audio fix and intro fix)...gameplay is great:
Metal Gear Solid (iso):BIOS Mode: BIOS File
Core Version: 1.5
GPU Plugin Version: 1.16
SPU Plugin Version: 1.9
Set Graphic Fixes: Turn everything "Off"; except for Framelimit......leave Framelimit "ON", Bit Depth=16
Set CPU Fixes: Everything should be "Off"
Set SPU Fixes:
-XA Sound= "On"
-XA Speed Fix= "On"..........this fixes the intro
-Reverb= "Simple"
-Interpolation = Gaussian/Good
-Wait CPU Action= "On"
-IRQ in Decoded Sound Buf= "Off"
-Sound Timer Method= "Original"........helps out the Wait CPU Action as "Threaded" makes audio too slow
Throttle Method= "Original"
Just noticed that the audio still stutters during some heavy scenes......but not too bad