I mistakenly removed the ALSA config and now Kali Linux has no sound

I mistakenly removed the ALSA config because of this guide. There is now no sound icon, as well as no sound.

If I try to install the ALSA package from terminal I get the following error:

sudo apt-get install alsa-base alsa-base-udeb alsa-firmware-loaders alsa-oss alsa-source alsa-tools alsa-tools-gui alsa-utils alsa-utils-udeb alsamixerguiReading package lists... DoneBuilding dependency tree       Reading state information... DonePackage alsa-base is not available, but is referred to by another package.This may mean that the package is missing, has been obsoleted, oris only available from another sourceE: Package 'alsa-base' has no installation candidateE: Unable to locate package alsa-base-udebE: Unable to locate package alsa-firmware-loadersE: Unable to locate package alsa-ossE: Unable to locate package alsa-sourceE: Unable to locate package alsa-tools-guiE: Unable to locate package alsa-utilsE: Unable to locate package alsa-utils-udebE: Unable to locate package alsamixergui

sources.list content:

## Regular repositoriesdeb http://http.kali.org/kali/ kali main non-free contrib deb http://security.kali.org/kali-security/ kali/updates main contrib non-free ## Source repositoriesdeb-src http://http.kali.org/kali/ kali main non-free contrib deb-src http://security.kali.org/kali-security/ kali/updates main contrib non-free