mktunes: 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/mktunes - from package: gnupod-tools

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

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