TablEdit seems to be strictly a PC program. On my Mac I use Songworks II from Ars-Nova.com (it's also PC compatible). You can use a MIDI keyboard, an on-screen keyboard, the Mac keyboard (with or without a Mini-Keys keyboard that sits on top of a Mac keyboard and as you play piano style keys, it strikes the appropriate keys on the keyboard below); in addition, you can replace the onscreen piano keyboard with a guitar keyboard and "play" it with your mouse. The program costs $130 from Ars-Nova, although I bought it from them at MacWorldExpo in San Francisco for about $70, as I remember. They also sell the MiniKeyboard (and Practica Musica, a piano tutor).

--seed