Well, mastering help is a big word, it's just that CoolEdit has some very good reverb presets which really make a difference. I usually use the Light Concert Hall setting. In your case this makes the piano sound just right, but the voice too echoey. So I picked the "Vocal Natural Reverb" which gives a nicer result here. Of course one could fiddle forever with this, but I do not want to compromise the clarity. Attached is that version, let me know if you hear a difference - it's very subtle. Yes perhaps working from the WAV would make it still better, but we're used to mp3 quality over here
Great that you are doing Babar as well ! It's fully on a par with Peter and the Wolf, Poulenc being just as witty and urbane as Prokofiev. But rats, now we have a year to wait ... Ah well I am sure it will be worth it.
Amazing there existed no piano recording of Peter and the Wolf ! It must be fun to play as it's so totally pianistic