One can "burn" audio files on DVDs. One has to have a DVD burner, but you can get one of those for $60-$100. A DVD might have 4.7 gigabytes of space where a CD only has 700 megabytes. You would have to play it on a DVD player, I guess.
Contacted yesterday by The New York Sun, Mr. Loftus would only say that he delivered a CD of the recordings to a representative of the committee, and the following week the committee announced that it was reopening the investigation into weapons of mass destruction.