Hello Coenraads,
Is it possible that you re-installed Windows XP using the original CD/DVD? I looked at the M-Audio driver page and the drivers for the Audiophile requires an installation on Windows XP SP2 or SP3. If you have the original (first release) of Windows XP or Windows XP SP1, it will not work, the drivers are not compatible.
See M-Audio page - https://m-audio.com/support/download/drivers/delta-wdm-5.10.00.5057v3. In the Release Note you will see *This is for Windows XP SP2 Only. Not supported on SP1.
You probably can find and download Win XP SP3 on Microsoft' website.
Hope that helps.