Audio file formats/codecs
3GPP (3rd Generation Partnership Project, .3gp)
AMR / AMR-NB / GSM-AMR (Adaptive Multi-Rate, .amr, .3ga)
eAAC+ / aacPlus v2 / HE-AAC v2
MP3 (MPEG-2 Audio Layer II, .mp3)
WMA (Windows Media Audio, .wma)
WAV (Waveform Audio File Format, .wav, .wave)