Latest WACUP public preview for x86 & x64 is build #22656 (September 12th 2025) (x86 & x64 changelogs) Latest restricted WACUP beta release is build #22656 (September 12th 2025) (x86 & x64 changelogs)
Change the settings in the AC3 plugin to stereo.make sure you have the newest version https://sourceforge.net/projects/ac3filter/files/winampac3/
It'd probably be better to use the interim update of matrix mixer plug-in that's available in the beta sub-forum.The only downside of that is some crashes on closing due to a weirdness I need to fully resolve from it loading the other output plug-ins otherwise it should do what's needed & it's based on aspects of the above noted plug-in.
matrix mixer should still work with audioburst as the reason I needed to start making an updated version was so matrix mixer can handle the wacup output plug-in revisions whilst still allowing the older specification output plug-ins to work I can otherwise add it to the todo list for in_flac.-dro