Hi,
 
I am using Sonar Professional. I am trying to use the M-Audio M-Track interface. I have installed the most current device drivers for the M-Track from the M-Audio website.

When I go to Edit->Preferences and look under Devices I can see the M-Track show up under both input drivers and output drivers; however, it is grayed out and I cannot check the box.
 
I have checked to make certain that the sample rate on the M-Audio device and the sample rate under Edit->Preferences -> Driver Settings are the same.
 
No luck.
 
Does anyone have any advice?

Thanks

I use same. It does say in tiny manual that you should be using ASIO4ALL. Be sure to set asio panel through sonar. Works like a charm for me.

Did you uncheck any other devices that might be showing up first?