Sorry for the late response. I appreciate the links, but I still cannot get it to work. I hooked up my Mackie Onyx 1640 to a Mac laptop running garageband and was recording in seconds so I know the Mackie works. (Unfortunately, the laptop was borrowed and is not readily available). My settings are as follows:
Audio Hardware>
Device Class: ASIO (when set to MME, nothing works, moves, etc.)
I/O Buffer size: 128 Samples
Sample Rate: 44100 Hz (grayed out)
I tried yet another reinstall and deleted all preferences when uninstalling. I set a new project to 44100 Hz. I set the Mackie as my default Playback and Recording device in Windows 7 (64 bit Pro, 6gb Ram, Pentium D 3.00ghz) with Audition closed, then opened Audition.
Again, I can record no problem when set to ASIO, and when I playback, the head moves and the meters jump as they should, but no sound!!!! I tried the channel and master channel at “Default” input and output (ASIO Mackie), and then manually put both input and output of the recording channel and master as the first Mackie channel (for input) and the 2 stereo channels for output. I can turn off the Mackie and set the Hardware settings to my regular computer speakers and hear the audio fine, but this does me little good when recording from my Mackie and needing to hear the song while recording a new track. The audio is there and playing, I just can’t hear it!!!
Also, the channel mapping confirms that inputs and outputs are set to the appropriate Mackie channels.