Audio files are available in three formats
Best - Near CD quality, but the files are larger.
2. Real Audio
These files are radio quality, and are quick to download. You may need to download RealPlayer to listen to these files. You can download the FREE RealPlayer (now called RealOne) from www.real.com, and select the FREE RealOne Player option where it says "Free RealOne Player" (top right of page) or you can click here to download.
WMA (Windows Media Audio) is similar to Real Audio in quality.