Issue regarding Etterna (random stops in audio)

I recently downloaded Etterna 0.71.2 on Linux. After booting it up and downloading packs i started to experience random stops in audio. After playing songs the audio randomly turns off. The bars on top (in menu’s) stop moving and any time i trying to start a song notes never come. I have to restart the game in order to get the audio back.
(sorry for my poor english)