I've run into a sound problem with my RBR install since upgrading to a new Mainboard. I'm out of my depth with sound related settings etc, so hoping someone here might be able to help. I have just upgraded my gaming PC by replacing the Mainboard, CPU, RAM, and re-installing Windows XP. The CPU is Intel I5-2500 and my Video card is NVidia GTX 460 SE. The mainboard is a Gigabyte board with on-board sound. The sound chip says VIA VT2021 2ch HD Audio. I have a Logitech speaker system (two stereo speakers and one sub woofer) connected to the rear speaker plug. Everything is working fine except for RBR, which has an intermittent (every couple of seconds) cracking / interference type of sound coming loudly through the engine sound when driving. Also the pacenote calls jump a bit when it happens. All very distracting. I've tried different settings for the sound options in the RBR.ini file, but it makes no difference. The only basic thing I have found to stop it is to go into Windows XP / Control Panel / Sound Options and to turn down the hardware acceleration to Basic level instead of the default Full. The other strange part, if I use my G35 headset via the USB plug, the sound problem isn't being heard. I don't have any problems with GTL sounds, only RBR. Installing RSRBR2012 still gives the same problem. Since it only occurs with RBR, I am assuming it may be due to a sound setting within RBR, but I have no idea what to try. Any help or ideas would be appreciated, PLEASE.