Translations:Archive:Kdenlive/Manual/Useful Information/FAQ/6/en

To fix ...

If your audio source is from a video file try extracting the audio from your video sources and transcoding the audio to WAV format. If you use the Extract Audio feature of Kdenlive to do this it will write a .wav file for you.
If you have a pure audio source try transcoding that to WAV.

lame --decode file.mp3 file.wav