(volume setting of 1, VLC player volume setting of 3 – 5). Since decibel level is a logarithmic scale, I would guess the sound level would be 1000’s of times softer than your usual volume.
Put a playlist of around 5-6 songs. Initially you would struggle to hear anything but keep concentrating on whatever little you can hear. Eventually it;ll get clearer and clearer and your sensitivity will increase. After a while once you get comfortable, increase the volume rapidly to your normal level or slightly more.
If its a favorite trance track esp, you;ll have a brief moment of euphoria where the music overwhelms you.