QML Audio plays but is inaudible when application executable contains "_"

I build an executable file with name "project_application". This app just directly load qml file with code:

import QtQuick 2.2
import QtMultimedia 5.0

Rectangle {
Audio

{ autoLoad: true autoPlay: true source: "file://file1.wav" muted: false volume: 0.5 }

}

Wave file is played (status changes, no errors, file is available, buffer is full, position changes, duration is known), but there is no sound. The only strange thing is while playing value of muted property is true, and if i change it to false, value just change back to true without any messages. I've tried to use MediaPlayer instead of Audio, and it was the same, and SoundEffects, and there was a sound!!!

If i name my project "projectapplication" everything is okey.