mpc2sv8: 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/mpc2sv8 - from package: musepack-tools

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

Error in other languages:
mpc2sv8: bevel nie gevind nie
mpc2sv8: comandă negăsită
mpc2sv8: comando não encontrado
mpc2sv8: commande introuvable
mpc2sv8: command not found
mpc2sv8: käsku ei ole
mpc2sv8: không tìm thấy lệnh
mpc2sv8: komanda nerasta
mpc2sv8: Kommando nicht gefunden.
mpc2sv8: kommandot finns inte
mpc2sv8: komut yok
mpc2sv8: nie znaleziono polecenia
mpc2sv8: níor aimsíodh an t-ordú
mpc2sv8: no se encontró la orden
mpc2sv8: no s'ha trobat l'ordre
mpc2sv8: opdracht niet gevonden
mpc2sv8: parancs nem található
mpc2sv8: perintah tidak ditemukan
mpc2sv8: príkaz nenájdený
mpc2sv8: příkaz nenalezen
mpc2sv8: команда не найдена
mpc2sv8: командата не е открита
mpc2sv8: 命令找不到
mpc2sv8: コマンドが見つかりません