Apple.com is the official website of Macintosh Apple computers. Here you can find a Mac MP3 download program, iTunes 4.. This Mac MP3 download program functions like a digital jukebox, letting you organize, share, and enjoy your music collection. The software has an Import feature that lets you store all your digital music from virtually any source in one place. This Mac MP3 download program also functions like an audio file converter, with encoding and decoding capabilities so you can store any digital files, such as MP3, AAC, CD, and more.