Skype: fix crackling sound
If skype on linux gives you crackling sound and you use pulseaudio, here is the solution to fix it.
Edit /etc/pulse/default.pa and put the following on the load-module module-udev-detect line
load-module module-udev-detect tsched=0
If you have no sound and you use archlinux and pulseaudio
pacman -S lib32-libpulse
And if your microphone doesn't work, check the Input tab in Sound settings to see you have the right device selected in the device list for sound input.