libmikmod-config: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH

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 CentOS possible default full paths are:

/usr/bin/libmikmod-config - from package: libmikmod-devel

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/libmikmod-config - from package: libmikmod-config

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