Conclusion

It seems that the driver update for Windows XP looks for the presence of certain driver files in the \windows\system32\drivers folder, and doesn't check the file versions. Critics of late might surmise that this process works due to the Audigy being based on the same EMU chip as the Live! series, but that hasn't been proven at all. Driver file similarities are likely due to the similar API's etc that the audigy uses. In any case, this process will get your Audigy up and working with a minimum amount of fuss, without the original CD and without not-optional apps like Playcenter!