: Re-encodes audio files from PC formats ( .wav or .xwm ) into the PS4's .at9 format.
The refers to a collection of utilities—primarily developed by community modders like Clayson (Clay Laurelith) and Backporter —designed to port PC mods for Skyrim Special Edition (SSE) and Fallout 4 to the jailbroken PlayStation 4 . These tools allow users to bypass the strict "no external assets" rule imposed on standard retail PS4 mods by converting PC-specific file formats into formats the PS4 hardware can read. Core Tools and Functions SSE - Fallout Conversion Tools PS4.zip
You can actually find the tools in Modded Wafare's Resident Evil 4 modding video's description. They're labelled as 'RE4 required' Reddit·r/ps4homebrew Fallout 4 and Skyrim Remastered PS4 Mods Support Incoming : Re-encodes audio files from PC formats (