powwow-movieplay: 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 CentOS possible default full paths are:

/usr/bin/powwow-movieplay - from package: powwow

You may install the required package with command yum install {package}

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