Mojo for the SMP. (Updated 9-29-12)

It looks great.  I’ve been looking at a few screenshots of these themes for a few days, and I have a few questions.

1 - Is this easy to install?  If so, how?  An ■■■■■-proof step-by-step guide would be smashing.

2 - Are all of the functions of the WDTVLSMP exactly the same - is it just the look that’s different?

3 - How easy is it to roll back to the original theme?

4 - Do these themes make the player work any slower (or, for that matter, faster)?

Cheers.

Steve W