last update with @BenMitnicK's latest BMK AT9 & AT3 Converter v2.3 adding PS4 conversion support among the changes in this revision.
To quote from his Official Site: AT9&AT3 Converter V2.3
Little program for convert your files Wav/MP3 To At9/At3 and At9/At3 To Wav/Mp3 nothing special you must have .NET Framework 4.5 installed and the files to be converted must be in the same directory as the application.
The At9&At3 format are used by Sony on PSVita/TV, PSP, PS3 and PS4 especially for the sounds of themes.
At9&At3_Converter allows you to convert these sound files to other formats.
- Add PS4 Conversion
- Add Player Actually only for PSP AT3