mp3report: 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/mp3report - from package: mp3report

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

Error in other languages:
mp3report: bevel nie gevind nie
mp3report: comandă negăsită
mp3report: comando não encontrado
mp3report: commande introuvable
mp3report: command not found
mp3report: käsku ei ole
mp3report: không tìm thấy lệnh
mp3report: komanda nerasta
mp3report: Kommando nicht gefunden.
mp3report: kommandot finns inte
mp3report: komut yok
mp3report: nie znaleziono polecenia
mp3report: níor aimsíodh an t-ordú
mp3report: no se encontró la orden
mp3report: no s'ha trobat l'ordre
mp3report: opdracht niet gevonden
mp3report: parancs nem található
mp3report: perintah tidak ditemukan
mp3report: príkaz nenájdený
mp3report: příkaz nenalezen
mp3report: команда не найдена
mp3report: командата не е открита
mp3report: 命令找不到
mp3report: コマンドが見つかりません