Thanks DG, I did the test and it worked fine with ASIO4ALL drivers. So it seems that the M-Audio isn't multi-client.
Dietz, what I meant by bringing in my Presonus soundcard was taking the M-Audio out of the machine and using the Presonus one instead to see if the Presonus was multi-client :).
Thanks for the info though but I think having two physical soundcards running this system would be to much of a mess. I would rather by another soundcard and not have the headache haha. I am trying to keep things simple and effecient, hence why I use MIR lol.
I will let you know tomorrow if the Presonus is multi-client.
Thanks!
Maestro2be