It is not easy to find, topeira@kde-brasil told me: Go to System Settings, Notifications, Player Settings, select “No audio output”. Click Apply, it’s done. 🙂
Disable sound notifications on KDE 4
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It is not easy to find, topeira@kde-brasil told me: Go to System Settings, Notifications, Player Settings, select “No audio output”. Click Apply, it’s done. 🙂