An MP3 file is normally used to store music data, but there are lots of free audiobooks that come in the MP3 format too.
A na-ejikarị faịlụ MP3 iji chekwaa egwu egwu, mana enwere ọtụtụ akwụkwọ ọdịyo na-abata na MP3 ọkpụkpọ.