OGG is a compressed audio file that uses the free Ogg Vorbis compression standard similar to MP3 but gives better quality with the same file size. OGG files rated by users are slightly better than MP3 files, sound quality is better although the same compression method and capacity are nearly equal.

Format Description
aac Advanced Audio Coding
mp3 MPEG-1 Audio Layer 3
m4a MPEG-4 Audio Book
wav Waveform audio format
ogg Ogg Vorbis Compressed Audio File
weba WebA Audio File
wma Windows Media Audio
flac Free Lossless Audio Codec
m4b MPEG-4 Audio Book
ac3 Audio Coding 3