Hi, Yes I tried to find how KDE interacts with audio (probably phonon-related ?) without success.
When I un VLC with KDE I find additional .so are used: /lib/x86_64-linux-gnu/libacl.so.1.1.0 /usr/lib/libfam.so.0.0.0 /usr/lib/x86_64-linux-gnu/libdbusmenu-qt5.so.2.6.0 /usr/lib/x86_64-linux-gnu/libKF5Attica.so.5.15.0 /usr/lib/x86_64-linux-gnu/libKF5Auth.so.5.15.0 /usr/lib/x86_64-linux-gnu/libKF5Bookmarks.so.5.15.0 /usr/lib/x86_64-linux-gnu/libKF5Codecs.so.5.15.0 /usr/lib/x86_64-linux-gnu/libKF5Completion.so.5.15.0 /usr/lib/x86_64-linux-gnu/libKF5ConfigCore.so.5.15.0 /usr/lib/x86_64-linux-gnu/libKF5ConfigGui.so.5.15.0 /usr/lib/x86_64-linux-gnu/libKF5ConfigWidgets.so.5.15.0 /usr/lib/x86_64-linux-gnu/libKF5CoreAddons.so.5.15.0 /usr/lib/x86_64-linux-gnu/libKF5DBusAddons.so.5.15.0 /usr/lib/x86_64-linux-gnu/libKF5GlobalAccel.so.5.15.0 /usr/lib/x86_64-linux-gnu/libKF5GuiAddons.so.5.15.0 /usr/lib/x86_64-linux-gnu/libKF5I18n.so.5.15.0 /usr/lib/x86_64-linux-gnu/libKF5IconThemes.so.5.15.0 /usr/lib/x86_64-linux-gnu/libKF5ItemViews.so.5.15.0 /usr/lib/x86_64-linux-gnu/libKF5JobWidgets.so.5.15.0 /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5.15.0 /usr/lib/x86_64-linux-gnu/libKF5KIOFileWidgets.so.5.15.0 /usr/lib/x86_64-linux-gnu/libKF5KIOWidgets.so.5.15.0 /usr/lib/x86_64-linux-gnu/libKF5Notifications.so.5.15.0 /usr/lib/x86_64-linux-gnu/libKF5Service.so.5.15.0 /usr/lib/x86_64-linux-gnu/libKF5Solid.so.5.15.0 /usr/lib/x86_64-linux-gnu/libKF5SonnetCore.so.5.15.0 /usr/lib/x86_64-linux-gnu/libKF5SonnetUi.so.5.15.0 /usr/lib/x86_64-linux-gnu/libKF5Style.so.5.15.0 /usr/lib/x86_64-linux-gnu/libKF5TextWidgets.so.5.15.0 /usr/lib/x86_64-linux-gnu/libKF5WidgetsAddons.so.5.15.0 /usr/lib/x86_64-linux-gnu/libKF5WindowSystem.so.5.15.0 /usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5.15.0 /usr/lib/x86_64-linux-gnu/libphonon4qt5.so.4.8.3 /usr/lib/x86_64-linux-gnu/libpulse-mainloop-glib.so.0.0.5 /usr/lib/x86_64-linux-gnu/libQt5Network.so.5.4.2 /usr/lib/x86_64-linux-gnu/libQt5PrintSupport.so.5.4.2 /usr/lib/x86_64-linux-gnu/libQt5Xml.so.5.4.2 /usr/lib/x86_64-linux-gnu/qt5/plugins/platformthemes/KDEPlatformTheme.so /usr/lib/x86_64-linux-gnu/qt5/plugins/styles/breeze.so Those .so are not used when run without KDE (with OpenBox). There's probably something happening in one of those. -- Gabriel