If you would like MP3 ripping to be added to Bashrats method of slipstreaming then you could try doing this. 1) Edit bashrats WMP10_Slipstreamer_V11.cmd and add %C%l3codecp.acm 2) Then edit the DOSNET.SIF file that's in your xpcd\I386 folder. Under the second [Files] section add d1,l3codecp.acm 3) Then edit the TXTSETUP.SIF file that's in your xpcd\I386 folder. Under the [sourceDisksFiles] section add l3codecp.acm =100,,,,,,,2,0,0 4) Then edit the wmp.in_ file that's in your xpcd\I386 folder. Extract wmp.ini out of the cab , under the [installWMP7] append to the end of the line in AddReg secection , Fraunhofer.Reg Then add futher down in the wmp.ini add this new section [Fraunhofer.Reg] HKLM, "SOFTWARE\Microsoft\MediaPlayer\Settings\MP3Encoding", "LowRate", 0x00010001, 128000 HKLM, "SOFTWARE\Microsoft\MediaPlayer\Settings\MP3Encoding", "MediumRate", 0x00010001, 192000 HKLM, "SOFTWARE\Microsoft\MediaPlayer\Settings\MP3Encoding", "MediumHighRate", 0x00010001, 256000 HKLM, "SOFTWARE\Microsoft\MediaPlayer\Settings\MP3Encoding", "HighRate", 0x00010001, 320000 HKLM, "SOFTWARE\Microsoft\MediaPlayer\Settings\MP3Encoding", "PreferredCodecName", , "mp3" HKLM, "SOFTWARE\Microsoft\MediaPlayer\Settings\MP3Encoding", "PreferredCodecPath", , "%11%\l3codecp.acm"Then cab the wmp.inf file and drop it back into the I386 directory on your xpcd. 5) follow the normal procedure and run your edited WMP10_Slipstreamer_V11.cmd Tried and tested fine for me. Thanks for pointing that out RyanVM.