ecaplay: 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/ecaplay - from package: ecatools

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

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