scrobbler-helper: 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-helper - from package: libaudio-scrobbler-perl

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

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