Interesting.

I don't know that much about Macs...

Presumably you'd need monitor / keyboard / mouse etc. - they're all standard. Can prob find some kicking around at home.

What extra hardware might you need?

e.g. Audio Interface, MIDI interface?

Just thinking about this - and with them going for £339 over here, seems a hell of a lot cheaper than a lappy.

Plus, also a good choice for a network audio player?