I agree with persentio that audio in WAV format is superior compared when compared to MP3. There are so many limitation with MP3 audio that makes me wonder why it has become so prevalent as an audio format.
On the other hand, I would like to caution fellow musicians of my mistake when I attempted to export WAV audio at 24bit 96kHz into 16bits 44.1kHz (for audio CD). There can be a significant difference of dynamics from your master if done incorrectly.
Just my 2 cents worth.