In this task, we will work on installing MP3 and WAV file audio player tools on the Raspbian operating system.
The Raspberry Pi is equipped with a 3.5mm audio jack and the speakers can be connected to that output. In order to get started, we install the ALSA utilities package and a command-line mp3 player:
sudo apt-get install alsa-utils sudo apt-get install mpg321
In order to use the alsa-utils or mpg321 players, we have to activate the BCM2835's sound drivers and this can be done using the modprobe command:
sudo modprobe snd_bcm2835
After activating the drivers, it is possible to play the WAV files using the aplay command (aplay is a command-line player available as part of the alsa-utils package) :
aplay testfile.wav
An MP3 file can be played using the mpg321 command (a command-line MP3 player) :
mpg321 testfile.mp3