^Most DVD players allow you to change the region on it, infact most recent DVD players do have region all on them, so you should check to see if yours does.
I have to change mine to region all from Region 2 (Cause I'm in the UK, it's R2, like Germany) to watch the DVD on Ayumi's GUILTY album I have, as I bought the Avex Taiwan edition.
Also, their performances are awesome. :3 Although it seems quite long to have 3 weeks between each single, and then the album release much later. What was the time inbetween on the last one? I could have sworn it was a week-2 weeks at the most?