esaudioinfo: 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/esaudioinfo - from package: opencaster

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

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