vlm and vlc mozilla plugin audio always mute

using VLC version 2.0.7 on Linux, I cannot hear any audio from video file broadcasted with VLM, making some debugging, I noticed, maybe, that mute parameter somewhere is not initialized, with the consequence that method void aout_VolumeSoftInit (audio_output_t *aout) inside src/audio_output/output.c cannot read mute parameter and then set this parameter always to true; I noticed the same behaviour using vlc mozilla plugin, so I think it's the same bug that affects both components

marco