Strange audio problem

[Aryeh Friedman]

I just bought a new pair of headphones and plugged them into the same HDMI
port  on my monitor as I plugged the old pair into.   The old pair works
just fine (busted head band makes them impossible to wear/use).   The new
pair works fine for music only or voice only (no background noises at all)
audio just fine but if it has music (or anything but
vocals/lyrics)+vocals/lyrics the vocals/lyrics are at a bare audible volume.

Tested with firefox/deadbeef/vlc

-- 
Aryeh M. Friedman, Lead Developer, http://www.PetiteCloud.org