.OMA

.OMA file extension

This is the basic program to work with .OMA extension

SonicStage

SonicStage ATRAC files

SonicStage allows you to import music from a variety of sources such as audio CDs, online music services, and your computer's hard disk. Your music files are registered as tracks in "My Library," the SonicStage music database. Tracks within My Library can be managed in various ways... (more)

The program works with the following extensions: mp4, mp3, wma, 3gp, m4a, oma, aa3, omg, wav, xdmd, oml2 and oms2

.OMA extension is also supported by the following programs:

VLC media player

VLC media player VLC media file (.oma)

Plays most multimedia files as well as DVDs, Audio CDs, VCDs, etc.
CONNECT Player

CONNECT Player OpenMG Audio files