I've got it working on my MAME cab and it works great without the number system (well, I haven't upgraded to the latest version but I can't imagine that that changed).
You will need a keyboard and mouse to set it up originally probably, but if you type O in the main screen, you will see lots of options, including remapping controls, etc...
I use the cursor keys (panel joystick) to scroll through the albums and the "fire1" key to select. When I select an album it "zooms" into that album, then I can select the top line for "entire album" (this is something you need to anable in the options) or I can choose a song.
I don't have enough buttons on my cab (single player) to map all the controls but I have mapped the one I really care about, like volume, etc...
You can even enable a credit mode if your cab has a token acceptor...