The File Extensions Database

.AA3 File Extension

  • Developer by: Sony
  • Category: Audio Files
  • Format: Binary

What is an .AA3 file?

.AA3 is ATRAC Audio File

Compressed audio file that uses Sony's ATRAC (Adaptive Transform Acoustic Coding) compression; supported by Sony audio devices and the Connect Music Services online store, which has been discontinued; AA3 files do not include any copy protection or digital rights management (DRM).

NOTE: In order for SonicStage to transfer an AA3 file to a Sony device, the ".aa3" file extension may need to be changed to .OMG.

Programs that open ATRAC Audio File
Sony SonicStage
MAGIX Sound Forge Pro 11
Sony ACID Xpress
MAGIX ACID Music Studio 10

How to solve problems with AA3 files

  • Associate the AA3 file extension with the correct application. On :
    Windows: Right click on any AA3 file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.AA3 files". Mac: Right click (or Ctrl-click) the AA3 file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .AA3 is ATRAC Audio File. Because only the current version supports the latest AA3 file format. Search, therefore, e.g. on the Sony manufacturer website after an available .AA3 is ATRAC Audio File update.
  • To make sure that your AA3 file is not corrupted or virus-infected, get the file again and scan it with antivirus software.