WAV
M4A amafayela
I-WAV (Ifomethi yefayela lomsindo we-Waveform) ifomethi yomsindo engacindezelwanga eyaziwa ngekhwalithi yayo ephezulu yomsindo. Ivamise ukusetshenziselwa izinhlelo zokusebenza zomsindo ochwepheshe.
I-M4A ifomethi yefayela lomsindo ehlobene eduze ne-MP4. Inikeza ukucindezelwa komsindo kwekhwalithi ephezulu ngokusekelwa kwemethadatha, okuyenza ifanelekele izinhlelo zokusebenza ezihlukahlukene.