mpccut: 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/mpccut - from package: musepack-tools

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

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