gnome-sound-recorder: 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/gnome-sound-recorder - from package: gnome-media-apps

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

On Debian possible default full paths are:

/usr/bin/gnome-sound-recorder - from package: gnome-sound-recorder

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

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