Audio management (prev/play+pause/next, volume up/down, speaker/headphone switching) via the command line

audiomgmt.sh

# I used the commands below not only on the command line, but also set up the aliased commands as global keyboard shortcuts.
# This can be useful if you have a keyboard that lacks media keys, or if the media keys don't behave exactly as you want them to.

# Everything below assumes PulseAudio on top of ALSA.
alias volup="amixer set 'Master' 10%+" # Using amixer because pacmd/pactl can increase beyond 100% volume, which I don't want.
alias voldn="amixer set 'Master' 10%-"
# This assumes sink port #1 and the naming of these ports. Check `pacmd list-sinks` and make adjustments if necessary.
alias outsp='pacmd "set-sink-port 1 analog-output;output-speaker'       # output to speakers
alias outhp='pacmd "set-sink-port 1 analog-output;output-headphones-1'  # output to headphones

# [!!!] See https://github.com/acrisci/playerctl for media control (prev/playpause/next).
# I specified "-p spotify" so this always controls Spotify.