mpskip: 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/mpskip - from package: mpdtoys

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

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