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To complete Bloc 'n' Roll (aka Bloxorz)U = Up, D = Down, L = Left, R = Right, S = SpaceRx4, U, L, Dx3, Rx4, Ux2, L, Ux2, Lx3, D, R, U, Rx2, D, R, U, Lx3, Dx2, Lx3, Ux2, R, Ux2, L, D, R, U, R, D, L
The Line6 UX2 is compatible with ProTools 9. ProTools 8 and previous versions are only compatible with Avid hardware (Mbox and Digi interfaces).
The UX2 includes Ableton Live Lite 6 Studio Edition. It can record and mix tracks for you, however, most users upgrade from this bundled recording software to a more professional package if they want to get serious. The UX2 has 2 inputs, so it can record 2 instruments or 2 microphones at the same time. If you need to record a whole band at once, you'll need a hardware mixer to mix all the audio down to a 2-channel (stereo) mix.
No, since it doesn't have any inputs in it, so you can't even record with it. Check for something like Line6 UX2 or google for "recording interfaces"