How to install sound in Raspberry Pi?
The simplest way to play audio on the Raspberry Pi is with wired speakers or headphones. These can be connected to the Raspberry Pi with the onboard headphone jack. From the desktop, make sure to set the Audio output to Analog by right-clicking the sound icon on the menu bar's top right portion.
Does Raspberry Pi use PulseAudio?
The latest point release of Raspberry Pi with Desktop Operating System utilises PulseAudio by default as it's default Sound Server.