Apple MB230LL/A Features Guide - Page 24

If iPod shuffle isn't playing music  Make sure the earphone or headphone connector is pushed in all the way.  Make sure the volume is adjusted properly. A volume limit might be set. See "Setting a Volume Limit" on page 17.  iPod shuffle might be paused. Try pressing Play/Pause ('). If you connect iPod shuffle to your computer and nothing happens  Connect iPod shuffle to a high-power USB port on your computer. iPod shuffle may need to be recharged.  Make sure you have installed the latest iTunes software from www.apple.com/ipod/start.  Try connecting to a different USB port on your computer. Make sure iPod shuffle is firmly seated in the dock. Make sure the USB connector is oriented correctly. It can be inserted only one way.  iPod shuffle might need to be reset. Turn iPod shuffle off, wait five seconds, and then turn it back on again.  If there is no status light (or the status light is dimmed) and iPod shuffle doesn't appear in iTunes or the Finder, the battery may be completely discharged. Let iPod shuffle charge for several minutes to see if it comes back to life.  Make sure you have the required computer and software. See "If you want to doublecheck the system requirements" on page 25.  Try restarting your computer.  If none of the previous suggestions solves the problem, you might need to restore iPod software. See "Updating and Restoring iPod shuffle Software" on page 26.  If restoring iPod shuffle doesn't solve the problem, iPod shuffle may need to be repaired. You can arrange for service on the iPod shuffle Service & Support website at www.apple.com/support/ipodshuffle/service. If songs load slowly Connect iPod shuffle to a USB 2.0 port on your computer for fast loading speeds. USB 2.0 loads songs and data faster than USB 1.1. If you can't load a song or other item onto iPod shuffle The song might have been encoded in a format that iPod shuffle doesn't support. The following audio file formats are supported by iPod shuffle. These include formats for audiobooks and podcasts:  AAC (M4A, M4B, M4P) (up to 320 kbps)  MP3 (up to 320 kbps)  MP3 Variable Bit Rate (VBR)  WAV  AA (audible.com spoken word, formats 2, 3, and 4)  AIFF 24 Chapter 5 Tips and Troubleshooting