Hi, I've applied the following patches from the upstream bug report linked in this bug report (https://bugs.kde.org/show_bug.cgi?id=309464). To the source package of the current version:
https://projects.kde.org/projects/kde/kdemultimedia/kmix/repository/revisions/09aabd4a344e045eb3a554f47fb7f1f6b43cf2ac/diff.diff https://projects.kde.org/projects/kde/kdemultimedia/kmix/repository/revisions/8a4a135e2885ede8848bbc961632ab65cf8239ee/diff.diff https://projects.kde.org/projects/kde/kdemultimedia/kmix/repository/revisions/6edddf7c8e92bb499cb60fdee53622cab326f334/diff.diff After applying these patches and rebuilding I am no longer having memory leaks with KMix. Kitty