scrobbler: 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/scrobbler - from package: scrobbler

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

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