I'm using Realtek High Definition Audio Card and WinFast TV2000 XP Expert on a Windows 7 Ultimate 32-bit (Built 7600) with the default
drivers and had the same audio problem. To resolve this problem go to Control Panel > Hardware and Sound > Sound > Recording Tab and right click on the window, check "Show Disabled Devices", then enable CD Audio, right click on it and select Properties, go to Listen Tab and check "Listen to this device" then go to Levels Tab and adjust volume, next... make all the advanced settings you want, what I've wrote here worked for me.
Sorry for my english.Cheers!