I agree with Zamira that this is one of the better "belly dance for exercise" videos, but it's also correct that some people might not care for the New Age music.
I'd recommend it for an intermediate or advanced level of belly dance skill. It uses some layering to get the cardio effect.
The type of workout is medium cardio. Someone who regularly does high-energy cardio probably wouldn't break a sweat, but someone who isn't accustomed to cardio exercise would be challenged.
For more reviews, see the listing on Amazon at
http://www.amazon.com/Ultimate-Belly.../dp/B000198C1Y