t Play http://www.info.apple.com/kbnum/n93025 This document explains why an AAC format file may not play in iTunes 4. iTunes 4: Music Store Connection Speed http://www.info.apple.com/kbnum/n93026 This document discusses the network capabilities recommended for downloading and previewing songs in the Music Store. iTunes 4: How to Contact Music Store Billing Support http://www.info.apple.com/kbnum/n93027 This document describes what to do if there is an issue with your Music Store purchase history. iTunes 4: How to View Album Artwork http://www.info.apple.com/kbnum/n93028 This document describes how to view album artwork in iTunes 4. iTunes Music Store: All Sales Final http://www.info.apple.com/kbnum/n93029 This document outlines the sales policy for the iTunes Music Store. iTunes 4: System Requirements http://www.info.apple.com/kbnum/n93030 This document describes the system requirements to use iTunes 4. iTunes 4: About Music Store Parental Advisories http://www.info.apple.com/kbnum/n93031 This document describes the Parental Advisory Label that appears on some selections available in the Music Store. iTunes 4: About Third-Party MP3 Players and AAC File Support http://www.info.apple.com/kbnum/n93032 Third-party digital music players may not support the MPEG-4 AAC downloads available from the Music Store or created with iTunes 4. iTunes 4: How to Backup Purchased Songs http://www.info.apple.com/kbnum/n93033 This document describes how to backup songs you've purchased with iTunes 4. iTunes 4: About Music Store Song Bitrate http://www.info.apple.com/kbnum/n93034 This document describes the bitrate for the songs available from the Music Store. iTunes 4: Purchased Music Does Not Play http://www.info.apple.com/kbnum/n93035 This document describes what to do if you are unable to authorize a computer to play purchased music. iTunes 4: How to Preview Songs With a Slower Network Connection http://www.info.apple.com/kbnum/n93039 This document explains how to preview a song in the Music Store with a slower Internet connection. iTunes 4: How to Locate Downloaded Files http://www.info.apple.com/kbnum/n93041 This document explains how to locate downloaded files purchased from the Music Store. iTunes 4: How to Create Lists of Your Favorite Songs http://www.info.apple.com/kbnum/n93045 This document describes ways to create a playlist in iTunes 4.