This post is just a reminder whenever one day I get the same problem: no sound in browser (in this case: Chromium) while the sound is normal using mplayer (or any other command line player). Some configurations:
$HOME/.asoundrc
# Use PulseAudio by defaultpcm.!default { type pulse fallback "sysdefault" hint { show on description "Default ALSA Output (currently...
Arch Linux, Mplayer, and Chromium Sound Problem