savemixer: 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
/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/sbin/savemixer - from package: oss4-base

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