transcriber: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH

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/transcriber - from package: transcriber

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