cmx2raw: 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/cmx2raw - from package: libcdr-tools

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

Error in other languages:
cmx2raw: bevel nie gevind nie
cmx2raw: comandă negăsită
cmx2raw: comando não encontrado
cmx2raw: commande introuvable
cmx2raw: command not found
cmx2raw: käsku ei ole
cmx2raw: không tìm thấy lệnh
cmx2raw: komanda nerasta
cmx2raw: Kommando nicht gefunden.
cmx2raw: kommandot finns inte
cmx2raw: komut yok
cmx2raw: nie znaleziono polecenia
cmx2raw: níor aimsíodh an t-ordú
cmx2raw: no se encontró la orden
cmx2raw: no s'ha trobat l'ordre
cmx2raw: opdracht niet gevonden
cmx2raw: parancs nem található
cmx2raw: perintah tidak ditemukan
cmx2raw: príkaz nenájdený
cmx2raw: příkaz nenalezen
cmx2raw: команда не найдена
cmx2raw: командата не е открита
cmx2raw: 命令找不到
cmx2raw: コマンドが見つかりません