mumble-django-configure: 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/sbin/mumble-django-configure - from package: mumble-django

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

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