Okay, so Asus stopped releasing drivers for the older Xonar cards, but that doesn't mean they've stopped developing them. Lucky for us they all use the same base driver and each driver has the hardware specifications for all of our cards.
Big thanks to cladisch on the Asus forums.
"The driver itself (cmudaxp.sys) was originally written by C-Media for all CMI8788-based cards; it was later extended by Asus to handle the somewhat different hardware on Xonar cards. All driver files with the same version number are identical.
However, the driver packages also contain an .INF file that tells Windows, among other things, which hardware the driver is to be used for. This .INF file is different for each model.
To make another driver package work with your card, you have to use the D2X .INF file, or you have to add the D2X's PCI ID at the correct place in the other .INF file. The line with the ID looks like this:
%CMI8788.DeviceDesc%=CMPCI, PCI\VEN_13F6&DEV_8788&SUBSYS_82B71043
Note: Using another driver will not work if that driver is so old that it does not yet know about the D2X's hardware."
Here's a thread that describes how to "modify" the drivers to recognize a Xonar DX2
http://vip.asus.com/forum/view.aspx..._id=21&model=Xonar+D2X&page=1&SLanguage=en-us
Here's an upload for the 8.17.62 series driver
Vista/Win7 : http://www.megaupload.com/?d=FEX4BHOO
XP : http://www.megaupload.com/?d=5DX5X6GS
I copy/pasted to make sure we've got a copy here if Asus deletes that thread (if they even check their forums..)
Big thanks to cladisch on the Asus forums.
"The driver itself (cmudaxp.sys) was originally written by C-Media for all CMI8788-based cards; it was later extended by Asus to handle the somewhat different hardware on Xonar cards. All driver files with the same version number are identical.
However, the driver packages also contain an .INF file that tells Windows, among other things, which hardware the driver is to be used for. This .INF file is different for each model.
To make another driver package work with your card, you have to use the D2X .INF file, or you have to add the D2X's PCI ID at the correct place in the other .INF file. The line with the ID looks like this:
%CMI8788.DeviceDesc%=CMPCI, PCI\VEN_13F6&DEV_8788&SUBSYS_82B71043
Note: Using another driver will not work if that driver is so old that it does not yet know about the D2X's hardware."
Here's a thread that describes how to "modify" the drivers to recognize a Xonar DX2
http://vip.asus.com/forum/view.aspx..._id=21&model=Xonar+D2X&page=1&SLanguage=en-us
Here's an upload for the 8.17.62 series driver
Vista/Win7 : http://www.megaupload.com/?d=FEX4BHOO
XP : http://www.megaupload.com/?d=5DX5X6GS
I copy/pasted to make sure we've got a copy here if Asus deletes that thread (if they even check their forums..)