This is FAudio, an XAudio reimplementation that focuses solely on
developing fully accurate DirectX Audio runtime libraries for the
FNA project, including XAudio2, X3DAudio, XAPO, and XACT3.

FAudio will be held at version 22.08 on Slackware 15.0 as 22.09
and newer require SDL >=2.24.0 to be present on the system.