I have a Rosetta Stone CD with approximately 20 languages and I have tried taking Rosetta Stone Arabic too. Let’s give a short Rosetta Stone Arabic review.
First of all, the method shows you pictures, like a cat and a dog, plays a sound and makes you repeatedly guess which picture corresponds to which sound (which word). You cram the words into your head like that. Then it goes on adding more complex structures, like saying “a child with a cat” in Arabic and making you guess which picture coresponds to this. Then, again, it goes on, and for example, you have 4 maps showing different parts of the world. Then, an Arabic sound goes “This area shows Asia” and you have to guess which of the 4 maps it is. This means, you have to understand what it says. And step by step you do understand it.
Did I personally like it? Not very much. Can it be useful? Sure.
I wasn’t able to find any better options for learning Arabic yet. So, Rosetta Stone Arabic is a good choice. It’s not for everyone, though, so my judgement is – try Rosetta Stone Arabic and get a refund if you don’t like it.