It's simple:
QUOTE
To play audio from the command line
By using the Run command in Windows, you can start Adobe Audition and begin playing a file in Edit View.
Choose Edit > Preferences, and select Auto Play On External Launch. Click OK.
In Windows, choose Start > Run.
Type the following text (including the quotation marks), and then click OK:
"[drive]:\Program Files\Adobe\Audition 2.0\Audition.exe" "[path to file]"
For example, to play the sound that Windows XP uses when you empty the Recycle Bin, type the following:
"c:\Program Files\Adobe\Adobe Audition 2.0\Audition.exe" "c:\Windows\Media\Windows XP Recycle.wav"
Note: Be sure to include one space between “. . . Audition.exe” and the next quotation mark.
But you need the format filter file. You can get it
here. Just copy it to the same folder where your Audition.exe is located.
Hope this helps!