Configuring audio routing from pulseaudio to jack:

sudo apt install xorg alsa-utils pulseaudio pulseaudio-module-jack qjackctl
*This method only works with i3 or mate, with xfce I don't know why it doesn't work.
sudo apt install i3-wm
or
sudo apt install mate

Qjackctl config:
Setup/Impostazioni -> Driver alsa with Real time flag, interface chooses its own, Sampling 44100,
Fotogrammi 1024, Periodo 2
Spuntare i flag in:
Opzioni ->
-Esegui script dopo l' Avvio:
pacmd load-module module-jack-source channels=2; pacmd load-module module-jack-sink channels=2;
-Esegui script dopo l' Arresto:
killall jackd
Spuntare il flag in:
Varie ->
Avvia il server Jack all' avvio dell' applicazione

*From: https://jackaudio.org/faq/linux_rt_config.html

sudo vim /etc/security/limits.conf

@audio   -  rtprio     95
@audio   -  memlock    unlimited

In devuan it is already created by default, possibly to check:
grep -Ri audio /etc/group

In absence give:
sudo groupadd audio
sudo usermod -a -G audio yourUserID

And finally:
Logout and back in

#### Per i Pd users
sudo apt install fonts-firacode
echo "pd='puredata -font-face "Fira Code" -font-size 12 -font-weight bold'" >> ~/.bashrc
source ~/.bashrc
Per fish-shell googlate...