FreeStar Free WAV MP3 Converter is a simple program that coverts WAV to MP3. With the program you can create MP3s of your high-quality WAV files.
Even though MP3 are lower quality than WAV, converting the files will allow you to store more songs on your MP3 playing device. Also bear in mind that many devices don't natively support WAV format.
FreeStar Free WAV MP3 Converter also supports batch converting so you can set up the program to convert entire albums with little trouble.