pulseaudio: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On CentOS possible default full paths are:

/usr/bin/pulseaudio - from package: pulseaudio

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/pulseaudio - from package: pulseaudio

You may install the required package with command apt-get install {package}

Error in other languages:
pulseaudio: bevel nie gevind nie
pulseaudio: comandă negăsită
pulseaudio: comando não encontrado
pulseaudio: commande introuvable
pulseaudio: command not found
pulseaudio: käsku ei ole
pulseaudio: không tìm thấy lệnh
pulseaudio: komanda nerasta
pulseaudio: Kommando nicht gefunden.
pulseaudio: kommandot finns inte
pulseaudio: komut yok
pulseaudio: nie znaleziono polecenia
pulseaudio: níor aimsíodh an t-ordú
pulseaudio: no se encontró la orden
pulseaudio: no s'ha trobat l'ordre
pulseaudio: opdracht niet gevonden
pulseaudio: parancs nem található
pulseaudio: perintah tidak ditemukan
pulseaudio: príkaz nenájdený
pulseaudio: příkaz nenalezen
pulseaudio: команда не найдена
pulseaudio: командата не е открита
pulseaudio: 命令找不到
pulseaudio: コマンドが見つかりません