streamripper: 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/streamripper - from package: streamripper

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

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