I still remember when Steve Jobs at last of the WWDC ’11 announced the iTunes Match which will fetch all your songs from the iTunes and send back to Apples Server to check that the songs which are present in your PC/Mac are available in the server of Apple or not and if not it will upload that audio file to its server and you will be able to listen iTunes file, the songs which will be matched also be then played by iTunes format.
To enable the iTunes match at your iDevice head over to Settings > Music and turn On the iTunes match. After enabling the iTunes match it will ask you to provide the Apple ID and it’s password of yours.
After the process all of your music will be washed off replacing the audio ported by iClouds server. “Show All Music”, disable it because enabling it will show you both the devices audio and iClouds audio but disabling it will only show you the audio files present in the iDevice.
iTunes Match is available at $24.99 per year and the iTunes 10.5.1 has been released too.