esaudio2pes: 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/esaudio2pes - from package: opencaster

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

Error in other languages:
esaudio2pes: bevel nie gevind nie
esaudio2pes: comandă negăsită
esaudio2pes: comando não encontrado
esaudio2pes: commande introuvable
esaudio2pes: command not found
esaudio2pes: käsku ei ole
esaudio2pes: không tìm thấy lệnh
esaudio2pes: komanda nerasta
esaudio2pes: Kommando nicht gefunden.
esaudio2pes: kommandot finns inte
esaudio2pes: komut yok
esaudio2pes: nie znaleziono polecenia
esaudio2pes: níor aimsíodh an t-ordú
esaudio2pes: no se encontró la orden
esaudio2pes: no s'ha trobat l'ordre
esaudio2pes: opdracht niet gevonden
esaudio2pes: parancs nem található
esaudio2pes: perintah tidak ditemukan
esaudio2pes: príkaz nenájdený
esaudio2pes: příkaz nenalezen
esaudio2pes: команда не найдена
esaudio2pes: командата не е открита
esaudio2pes: 命令找不到
esaudio2pes: コマンドが見つかりません