Amazon Cloud Player app for iPad and the iPad mini is now available in the Apple App Store.

For those unfamiliar, the app allows customers to play or download music stored in Cloud Player to their iPad, play music already stored on their device, and manage or create playlists.
So following the release of Cloud Player app for iPhone and iPod touch, henceforth the iPad and the iPad owners can now play
or download music stored in Cloud Player to their iPad.
The goal:  to make Cloud Player the most widely compatible cloud playback solution available; buy music once and enjoy it everywhere.  
This means that with this new app, users have full access to their Cloud Player music libraries and also can add playlists that are currently on their iPad.
Note: All Amazon purchases and up to 250 imported songs are stored in Cloud Player for free. Customers with large music collections can import up to 250,000 songs for $24.99 per year.