Four things happened: 1. I was able to set "VMR9 Mixer mode" On in Media Player Classic. Effect: Enhanced DVD video playback, visible better color quality. 2. I found that i can play 4,1 (or 5,1) sound while in Surround mixer i can set any of the effect ON. 3. I use Creative Sound Blaster 5.1 with WDM drivers. anyway i was not able to reproduce my current system configuration. For me it is mystery how this works. 4. windows media player is after all able to play CDs via SPDIF interface without chops. This has been archieved by adjusting "Audio CD F:" properties. I selected "digital" playback and enabled "error correction". Too many things fixed recently. I did some minor changes since last system restore, i probably forget how i set them previously to work fine and now when I set them to correct values I am amazed at the way how they work. Just backing up my own system settings. Check them, i have been testing hundreds of any possible values on my hardware but these works best. Autoexec.bat @echo off cls @CTTY NUL LFNFOR ON set windir=c:\os set winbootdir=c:\os mode con codepage prepare=((852) C:\OS\COMMAND\ega.cpi) mode con codepage select=852 lh keyb sl,,C:\OS\COMMAND\keybrd2.sys rem c:\dos\xmsdsk\xmsdsk.exe 513732 K: /c1 /t /y c:\dos\xmsdsk\xmsdsk.exe 524288 K: /c1 /t /y rem C:\OS\COMMAND\label K: scorpion lh C:\dos\blaster\sbeinit.com c:\dos\shsucdx.com /d:AADVARK /Q /l:f c:\dos\cmouse\ctmouse.exe rem lh c:\dos\lsl rem c:\dos\e1000odi rem c:\dos\e1000pkt 0x60 rem c:\dos\ipxodi.com /a rem lh vc rem c:\umbpci\fastvid\fastvid.exe 111 -128 d0000000 SET PATH=%PATH%;C:\PROGRA~1\ATITEC~1\ATICON~1 c:\dos\umbpci\umbfill.com CTTY CON Config.sys SWITCHES=/F /E DOS=HIGH,UMB,noAUTO FILEShigh=150 FILES=150 BUFFERShigh=50,8 BUFFERS=50,8 LASTDRIVE=k FCBShigh=1,0 FCBS=1,0 STACKShigh=0,0 STACKS=0,0 DEVICE=C:\OS\HIMEM.SYS /numhandles=128 /hmain=64 /TESTMEM:OFF /Q DEVICE=C:\dos\EMM386.EXE RAM NOTR SET PATH=C:\OS;C:\OS\COMMAND;c:\vc;C:\DOS SET BLASTER=A220 I5 D1 SET CTSYN=C:\OS DEVICEhigh=C:\DOS\QCDROM.SYS /D:AADVARK rem SHELL=C:\COMMAND.COM C:\ /E:1280 /L:160 /U:160 /P /F ACCDATE=C- D- E- F- DEVICEhigh=C:\OS\SETVER.EXE DEVICEhigh=C:\OS\IFSHLP.SYS devicehigh=C:\OS\COMMAND\DISPLAY.SYS con=(ega,,1) Country=421,852,C:\OS\COMMAND\country.sys System.ini [boot] oemfonts.fon=vgaoem.fon shell=Explorer.exe system.drv=system.drv drivers=mmsystem.dll power.drv user.exe=user.exe gdi.exe=gdi.exe sound.drv=mmsound.drv dibeng.drv=dibeng.dll comm.drv=comm.drv mouse.drv=mouse.drv keyboard.drv=keyboard.drv *DisplayFallback=0 fonts.fon=vgasys.fon fixedfon.fon=vgafix.fon 386Grabber=vgafull.3gr display.drv=pnpdrvr.drv [keyboard] keyboard.dll= oemansi.bin=xlat852.bin subtype= type=4 [boot.description] system.drv=Štandardné PC keyboard.typ=Štandardná klávesnica 101 alebo 102 klávesov alebo klávesnica Microsoft Natural mouse.drv=Štandardná myš aspect=100,96,96 display.drv=RADEON X850 Series [386Enh] ebios=*ebios woafont=dosapp.fon mouse=*vmouse, msmouse.vxd device=*dynapage device=*vcd device=*vpd device=*int13 keyboard=*vkd display=*vdd,*vflatd MaxPhysPage=40000 ConservativeSwapfileUsage=0 MinSPs=16 DMABufferSize=64 PagingDrive=K: MinPagingFileSize=523264 MaxPagingFileSize=523264 MaxDMAPGAddress=1000 [NonWindowsApp] TTInitialSizes=4 5 6 7 8 9 10 11 12 13 14 15 16 18 20 22 [power.drv] [drivers] wavemapper=*.drv MSACM.imaadpcm=imaadpcm.acm MSACM.msadpcm=msadpcm.acm MSVideo.VfWWDM=vfwwdm.drv wave=mmsystem.dll midi=mmsystem.dll VIDC.IV41=ir41.dll VIDC.IV32=ir32.dll VIDC.IV31=ir32.dll VIDC.YVU9=iyvu9.dll VIDC.MSVC=msvidc.drv VIDC.MRLE=MSRLE.drv [iccvid.drv] [mciseq.drv] [mci] cdaudio=mcicda.drv sequencer=mciseq.drv waveaudio=mciwave.drv 4 avivideo=mciavi.drv MPEGVideo=mciqtz.drv MPEGVideo2=mciqtz.drv [vcache] MaxFileCache=32768 MinFileCache=32768 ChunkSize=512 [MSNP32] [drivers32] msacm.lhacm=lhacm.acm VIDC.VDOM=vdowave.drv MSACM.imaadpcm=imaadp32.acm MSACM.msadpcm=msadp32.acm MSACM.msgsm610=msgsm32.acm MSACM.msg711=msg711.acm MSACM.trspch=tssoft32.acm vidc.CVID=iccvid.dll VIDC.IV31=ir32_32.dll VIDC.IV32=ir32_32.dll vidc.MSVC=msvidc32.dll VIDC.MRLE=msrle32.dll VIDC.IV50=ir50_32.dll msacm.iac2=C:\OS\SYSTEM\IAC25_32.AX msacm.l3acm=C:\OS\SYSTEM\L3CODECA.ACM VIDC.YUY2=msyuv.dll VIDC.UYVY=msyuv.dll VIDC.YVYU=msyuv.dll VIDC.I420=msh263.drv VIDC.IYUV=iyuv_32.dll vidc.X264=x264vfw.dll vidc.xvid=xvid.dll VIDC.HFYU=huffyuv.dll vidc.ffds=ff_vfw.dll msacm.avis=ff_acm.acm VIDC.YVU9=tsbyuv.dll [TTFontDimenCache] 0 4=2 4 0 5=3 5 0 6=4 6 0 7=4 7 0 8=5 8 0 9=5 9 0 10=6 10 0 11=7 11 0 12=7 12 0 13=8 13 0 14=8 14 0 15=9 15 0 16=10 16 0 18=11 18 0 20=12 20 0 22=13 22 Note: Since last of the tests i randomly performed was test of VcacheFix (which failed on my system) i have to put vcache.vxd info here. Modified: 11.2. 2008 (obviously the "fixed" version). I use selfcompiled vmm32.vxd which uses newer versions as defaults - maybe some trouble have been caused by this, and maybe some memory settings have been correctly set. Not sure about that.