This should be a good news for apple fans. We know that people using iPhone and iPod Touch can download and listen music from amazon store on Amazon Cloud Player for iOS. You can stream your library from the cloud – or play the music you already have on your device. You can also create and edit playlists, play music in the background, or use Bluetooth to stream your music in your house or car.

Now as per the latest development at amazon.com, you can now buy music from your phone at www.amazon.com/mp3, then play it immediately in Cloud Player, without having to sync or transfer. A feature to buy songs for apple devices has been one of the major requests from apple users from long and so amazon seems to have done the same finally.

As per Steve Boom, vice president of Amazon Music -
For the first time ever, iOS users have a way do that—now they can access Amazon's huge catalog of music, features like personalized recommendations....They can buy their music once and use it everywhere.

Once customers have purchased the music, it can be automatically saved to customers Cloud Player libraries and can be downloaded or played instantly from any iPhone, iPod Touch, iPad, Kindle Fire, Android phone or tablet, Roku, Sonos home entertainment system, or any Web browser.

Well, I think Amazon's Mp3 Store is now a serious competitor to Apple's iTunes Store. Currently Amazon's mp3 store has more than 22 million songs in the U.S. and more than 29 million world-wide.

Video below from CNET gives a good comparison between both these stores -