No audio when playing clips or edited video on Ubuntu/Kde

I have the latest version of Kdenlive running under Ubuntu/Kde. Everything seems OK except no audio when I play a clip or an edited video. On the screen it appears that audio is working but in fact there is no sound. If I try the same on another video editor e.g. Open Shot, no problem. Kdenlive is installed with a snap.

Hi, and welcome to the forum and community.

The only officially supported packages are Flatpak on Flathub and the appimage from the Kdenlive web site. Please try either of them and report back here how it went.