HI,
I need to hear the audio of my video during I edit and I don't know how, so can you help me. The only think it have work for my is to edit with a very low profil(like 144p at 30fps). I have already enable the proxys clips. I have also try the preview but it's take a long of time.

My system:
Windows 7
Kdenlive 18.04.1

I have some issue using 18.04.1 on Win7 because some new MLT and QT is implemented which is not really working. Try version Kdenlive-17.12.0-w64.7z. Don’t forget to download and copy the correct FFMPEG version. And see here: viewtopic.php?f=265&t=151516&p=396245&hilit=windows+mp4#p396245