Once the original audio file is compressed into an mp3, you can't get the full original quality back. If you burn mp3s to a CD, they will burn as loosy audio files. You gain 10 times the space by burning mp3s to a CD rather than having the full uncompressed audio, but what you gain with quanity, you lose with quality.
The whole, "You lose audio that the human ears can not percieve" is FALSE. Years ago I used to travel around to concerts and record them using DAT and Mini-Disc with a set of microphones. After recording the concert, I would burn the show to a CD or record it to a cassette. I could even tell the difference between a "Master" copy of the show and a copy that had been recorded 4 or 5 times over itself. The human ear can tell the difference between a .WAV and .MP3......it's just a matter of listening to what we are used to listening to and focusing attention to most balances of music or sound that you wouldn't normally just by listening to a CD in your living room.
Record a CD using MP3s and then listen to the original audio in a undisturbed environment. I guarantee that you will be able to make out the difference.