Ive just ordered a region 1 copy of this from the states (www.totalfitnessdvds.com) you can play these if you have a region free dvd player - even if you don't most dvd players have a code you can use to make them region free (region 0) if you google your dvd player and region free code you'll probably find it fairly easily, that's what I did and its saved me a fortune on dvd costs - the region 1 version is often available way before the uk version and is often around half the price!
Not sure if you know this but this is available on Amazon as a US import. I got a code for my dvd player from the web and I can play any region dvd now. Most dvds are soooo much cheaper to buy as US imports. Hope this helps.