Nije tiskarska greška, npr. Foobar ti podražva Mp4 i konvertiranje u dotični format.
Evo usporedba nekih formata:
Aiff - 45.2 MB - cd quality (cd audio)
MP3 - 6.1 MB - 192 kbps (sounds good)
MP4 - 1.8 MB - 56 kbps (drastic loss of highs)
MP4 - 3.1 MB - 96 kbps (sounds as good as 192 mp3)
MP4 - 6.2 MB - 192 kbps (close to aiff quality)
OGG - 6.2 MB - 192 kbps (warble of a 96 kbps mp3)