Sonar III and M Audio 2496

[Belvee]

I hve been using sonar III producer Edition with a (santa cruiz) sound card with no problem
This card has a on bord synthizer I can record and palyback Audio and Midi tracks together

I have Just installed a (M audio2496 )sond card in anotrer pCI slot. the problen is? only my audto tracks can be heard during playback not my midi tracks. both cards are installed
I selected the M audio for playback but I cannot hear no midi tracks only audio tracks I know the audiophile is working because I can detect the difference in sound quality
my music contain both midi and audio about 5 tracks each
How do I get midi from the m audio card what did I miss out is it a connection probleem
The output from the M audio goes through a mixer to an amplifier to speakers
any help is appreciated

belvee