This is how I fixed the sound problem:
root@Kali:~#apt-get install libasound2 alsa-utils alsa-oss
root@Kali:~# alsamixer
Type: Posts; User: Helena
This is how I fixed the sound problem:
root@Kali:~#apt-get install libasound2 alsa-utils alsa-oss
root@Kali:~# alsamixer