player.py: 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/share/games/oneisenough/bin/player.py - from package: oneisenough

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

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