Maybe you could kill 2 birds with 1 stone and still keep your Audiophile. A pre-amp/DI/line-in type device with built in converters could replace your desk and may well have better converters than the audiophile. You would connect the devices digital output to the S/PDIF in of the Audiophile.
Devices like this include the aphex 207D, DBX386, art DPS II, or the focusrite platinums (with digi card option).
This is just one way to go. There are many other options (including a brand new interface) but this would be quite easy, means you can keep the Audiophile and get rid of the Yammy.