banshee: 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/banshee - from package: banshee

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

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