It's an interesting suggestion not without merit. In the meantime, while this is only a suggestion instead of a reality, the following
could be useful for you...
The base path, directory and filename fields of the tool all accept
expressions meaning that you could use one set of rules to take care of everything without the need for you to concern yourself with the media type you're working with.
At its most simple, you would be looking at something along the lines of:
if(isequal([media type],audio,1),AUDIO SCHEME,VIDEO SCHEME)
Regards,
-marko