Reset cuesheet doesn't reset audio player duration #595

Describe the bug
Duration of audio player is not reset when reset cuesheet is done.

To Reproduce
Steps to reproduce the behavior:

1. Go to More menu
2. Click on Reset cuesheet
3. Scroll down to audio player
4. See duration not beeing reset

Expected behavior
Duration should be empty because of no audio files beeing present.

Screenshots

Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context
Add any other context about the problem here.