With the trial version of Sonic Burner, you can enjoy unlimited playing of CDs and MP3s and can make up to 20 high-quality MP3s from your favorite CDs. One-touch recording converts your MP3 files to a CD that can be played in any standard player. Sonic Burner can also transfer songs directly to your RIO 500 player(using a USB connection). If you upgrade the software for $9.99, you are able to access unlimited MP3 encoding and CD burning.