|I was messing around with qtractor and jackd, but decided I didn't want to use it. I then uninstalled them with
apt-get uninstall qtractor jackd jackd2
Now, no program (I've tried Google Chrome and VLC, which worked fine before) outputs any sound to the speakers. I'm assuming it's a PulseAudio issue, because if I unmute the playback of the Line In in ALSA Mixer and plug in my keyboard, I can hear it fine through the spekers.
What could be causing this? I've tried reinstalling Pulse Audio via
apt-get purge pulseaudio
apt-get install pulseaudio
but that doesn't help.