I have just installed Mac OS X 10.7 Lion DP4 on my HP laptop. I fixed sound with Voodoo HDA 2.7.2, but in some apps, the loud sounds from music or videos have a crackling sound in the background. My system is using IDT HD Audio.
I didn't have this problem on my previous hackintosh, which was running Leopard 10.5.8 also with Voodoo HDA, from the iATKOS v7 dvd, the sound card in the machine was Conexant HD Audio.
Hope someone can help me get rid of the crackling sound. For some reason it doesn't appear in iTunes, but it does in Quicktime, VLC Media Player, and Youtube.