xfburn: 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/xfburn - from package: xfburn

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

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