Well, of course after sending my last response, I figured out how to do it. (see attached image)

--> Choose a song (of course)
--> At the top bar, choose "Melody" drop-down
--> Select "Bass" instead of "Single Channel"
--> Go to Lead Sheet Window (alt-W)
--> Transpose down one octave (ctrl-alt-1)
Voila !

I have a PC, so I think ctrl=cmd and and alt=option in Apple-land )

Claudia

Attached Files (Click to download or enlarge) (Only available when you are logged in)
treble to bass.jpg (76.43 KB, 61 downloads)

Rhythm guitar is like vanilla extract in cake. You can't taste it when it's there, but you know when it's left out -- Irving Ashby