soundgrain: 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 Debian possible default full paths are:

/usr/bin/soundgrain - from package: soundgrain

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

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