What is .AT3 file extension?
.AT3 file extension is a known file type. This section of easyfileopener.com tells you everything you need to know about this extension.
Audio file created with Sony's Adaptive Transform Acoustic Coding 3 (ATRAC3) compression algorithm; designed for storage and playback on portable media devices, including Sony CD and MP3 players, the PlayStation Portable (PSP), and Sony Ericsson mobile phones.
AT3 files may also be seen as .AA3 files, or as .OMG files, which contain Digital Rights Management (DRM) protection.
You can see a list of software programs here on easyfileopener.com that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.