Apple iPod shuffle - System Requirements Check

A song encoded in Apple Lossless format has near CD-quality sound, but takes up only
about half as much space as a song encoded in AIFF or WAV format. The same song
encoded in AAC or MP3 format takes up even less space. When you import music from
a CD using iTunes, it’s converted to AAC format by default.
You can have iPod shue automatically convert les encoded at higher bit rates to
128 kbps AAC les as they’re synced with iPod shue. See “Fitting More Songs on
iPod shue” on page 21.
Using iTunes for Windows, you can convert unprotected WMA les to AAC or MP3
format. This can be useful if you have a collection of music encoded in WMA format.
iPod shue doesn’t support WMA, MPEG Layer 1, MPEG Layer 2 audio les, or
audible.com format 1.
If you have a song in iTunes that isn’t supported by iPod shue, you can convert it
to a format iPod shue supports. For more information, open iTunes and choose
Help > iTunes Help.
If you want to double-check the system requirements
To use iPod shue, you must have:
One of the following computer congurations:

A Macintosh with a USB 2.0 port 
A Windows PC with a USB 2.0 port or a USB 2.0 card installed 
One of the following operating systems: Mac OS X v10.5.8 or later, Windows Vista, 
or Windows XP Home or Professional with Service Pack 3 or later
Internet access (a broadband connection is recommended)

iTunes 10 or later (you can download iTunes from  www.itunes.com/download)
If your Windows PC doesn’t have a high-power USB 2.0 port, you can purchase and
install a USB 2.0 card.
High-power USB 2.0 port
32
Chapter 6 Tips and Troubleshooting