tempest_for_mp3: 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/tempest_for_mp3 - from package: tempest-for-eliza

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

Error in other languages:
tempest_for_mp3: bevel nie gevind nie
tempest_for_mp3: comandă negăsită
tempest_for_mp3: comando não encontrado
tempest_for_mp3: commande introuvable
tempest_for_mp3: command not found
tempest_for_mp3: käsku ei ole
tempest_for_mp3: không tìm thấy lệnh
tempest_for_mp3: komanda nerasta
tempest_for_mp3: Kommando nicht gefunden.
tempest_for_mp3: kommandot finns inte
tempest_for_mp3: komut yok
tempest_for_mp3: nie znaleziono polecenia
tempest_for_mp3: níor aimsíodh an t-ordú
tempest_for_mp3: no se encontró la orden
tempest_for_mp3: no s'ha trobat l'ordre
tempest_for_mp3: opdracht niet gevonden
tempest_for_mp3: parancs nem található
tempest_for_mp3: perintah tidak ditemukan
tempest_for_mp3: príkaz nenájdený
tempest_for_mp3: příkaz nenalezen
tempest_for_mp3: команда не найдена
tempest_for_mp3: командата не е открита
tempest_for_mp3: 命令找不到
tempest_for_mp3: コマンドが見つかりません