amzdownloader: 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/amzdownloader - from package: amarok-utils

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

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