qmmp
An audio player.
TLDR
Launch qmmp
$ qmmp
Start or stop the currently playing audio
$ qmmp --play-pause
Seek forwards or backward a specific amount of time in seconds
$ qmmp --seek-[fwd|bwd] [time_in_seconds]
Play the next audio file
$ qmmp --next
Play the previous audio file
$ qmmp --previous
Print the current volume
$ qmmp --volume-status
Increase or decrease the volume of the currently playing audio by 5 steps
$ qmmp --volume-[inc|dec]