avg_videoplayer: 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/avg_videoplayer - from package: python-libavg

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

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