This free software edited by Apple is an absolute must-have, probably one of the best audio players. iTunes collects and organizes all your music files, letting you sort them by artists, titles, types of music... You can also burn CDs, share your music with friends or synchronize your iPod player.

Moreover, iTunes is the access point to Apple's music platform, iTunes Music Store, on which you can buy music, podcasts or audio books. And free stuff too to download too. This freeware runs on Windows XP, Windows 2000 and Mac OS X 10.3.9 or higher.