.AA3

.AA3 file extension

This is the basic program to work with .AA3 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: mp3, wma, mp4, omg, wav, 3gp, m4a, oma, aa3, xdmd, oml2 and oms2