Curlew is an easy to use, Free and Open-Source Multimedia converter for Linux.
MystiQ
Easy to use and elegant Multimedia converter.
Дуу хувиргагч
soundKonverter нь янз бүрийн аудио хөрвүүлэгчдийн урд хэсэг юм.
DeaDBeeF
DeaDBeeF lets you play variety of audio formats, convert between them, customize the UI almost any way you want, and use many additional plugins which can extend it even more.
Цэнхэр
The ciano is a multimedia converter for all the format you need.