DMDS allows me to upload wav and mp3 files. Which type is best?

Radio holds very high standards for the quality of audio they play on-air. Wav is the standard uncompressed digital file format suitable for radio. The compression used in converting music to mp3 degrades audio quality. Distributing a less than pristine audio file will limit your chances of gaining airplay, especially with satellite and HD broadcasters. We highly recommend that your track be sent in full wav format. In short, the higher the quality of the submitted track, the better it will represent your music, increasing the chance for consideration by programmers. Note: the source must be CD quality. Converting an mp3 to wav does not improve audio quality and will likely make things worse.