I want to tell you that audiodriverwriter make drivers for Envy24HT and Envy24 PCi-cards.

http://www.audio-evolution.com/drivers/

The following sound cards are supported by the Envy24HT driver:

* Terratec Aureon Sky
* Terratec Aureon Space
* Terratec Phase 22 (tested myself)
* Terratec Phase 28
* M-Audio Revolution 5.1
* M-Audio Revolution 7.1
* ESI Juli@

The following sound cards are supported by the Envy24 driver:

* M-Audio Delta 44 (verified)
* M-Audio Delta 66 (verified)
* M-Audio Delta 2496 (verified)
* M-Audio Delta 1010LT
* Terratec Phase 88 / EWS88MT / TS88PCI

I have the 2496 and the delta 66 and it works.

Thx for the info axel ;P