mikmod: 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/mikmod - from package: mikmod

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

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