Amazon has announced that it is to launch a Cloud Computing service known as Amazon Cloud. The service will include the Amazon Cloud Drive, which allows you to store not only music (MP3 and AAC), but videos, photos and documents as well.  You’ll get an amount  of storage for free, but will have to pay a fee to extend the storage believed to be around $20 per year.

Amazon’s big idea is that instead of sitting on your computer, your music collection will sit online. That way, you can listen to it from any computer — at home, at work, at a friend’s — by logging into a special Web page called the Amazon Cloud Player.

You can also listen to anything in your music collection on an Android phone. No copying or syncing of music is ever required; all your songs are always available everywhere, and they don’t hog any storage on the phone itself.

Amazon takes the sting out of its storage prices with some special offers. For example, if you buy an album from Amazon’s music store, your Cloud Drive gets bumped up to 20 gigabytes for the year — no charge.

The bad news for the UK is that the service is only available in the USA at the moment. We’ll update you as soon as we hear anything UK specific.