So make sure the playback equipment you’re using is appropriate for the disc’s format. If you’re trying to play a song on a CD that you burned using Music: You can’t play DVDs burned using Music on most consumer DVD players. Other AAC files that you find on the internet or elsewhere won’t play in Music. Songs in this format play in Music and on your iPhone, iPad, and iPod. If you’re trying to play an AAC file that was not created using Music or downloaded from the iTunes Store: Songs you download from the iTunes Store or import into your library using the AAC encoder are encoded using the MPEG-4 AAC format. See Share songs from a shared library in Music.

If your computer isn’t authorized to play songs purchased by the person who is sharing the song, to hear it you’ll need to enter that person’s Apple ID and password. To listen to a purchased song in a shared library or playlist, double-click the song. If you’re listening to a shared library or playlist: Music skips iTunes Store purchases if your computer hasn’t been authorized to play them. See Usage rights for iTunes Store purchases. If the song is available as an iTunes Plus download, you can upgrade the song at the iTunes Store. (For instructions on deauthorizing a computer, see Authorize a Mac to play iTunes Store purchases.) After you authorize five computers, you can’t play the songs on a sixth computer until you deauthorize one of the five authorized computers. If the song isn’t an iTunes Plus version, you can play it on up to five authorized computers. If you can’t play a song purchased from the iTunes Store: You may have exceeded the number of computers on which you can play your purchases.

Add and edit information about items in your library.

Create, edit, and delete Smart Playlists.

Create, edit, and delete standard playlists.

Import from other computers using Home Sharing.

Import from your computer or another computer.

Express store music playlist