From Vista x64 Ultimate to now Win7 x64 U, I still get no sound in certain games. After digging and digging, trying and trying, standard output format (frequency too high), enable Stereo Mix, run in XP compatibility, etc., still no sound! Then, I found the common of these games, they all use the fmod sound engine!! The major 2 games I'm having problem right now is 'Ninja Blade' and 'Heroes Over Europe'. I'm using the latest drivers for all my hardware. Sound is fine with all other applications. The funny thing is I can play the ".fsb" sound files with simple media player as they are just simple mpeg audio: Code: [FONT=Courier New]General Complete name : I:\Ninja Blade\sound\NB_BGM_m0100_SB.fsb Format : MPEG Audio File size : 8.52 MiB Duration : 12mn 24s Overall bit rate : 96.0 Kbps Audio Format : MPEG Audio Format version : Version 1 Format profile : Layer 2 Duration : 12mn 24s Bit rate mode : Constant Bit rate : 96.0 Kbps Channel(s) : 2 channels Sampling rate : 44.1 KHz Stream size : 8.52 MiB (100%)[/FONT] Any in-depth suggestion is welcome.