sid2wav: 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/bin/sid2wav - from package: sidplay-base

You may install the required package with command apt-get install {package}
Error in other languages:
sid2wav: bevel nie gevind nie
sid2wav: comandă negăsită
sid2wav: comando não encontrado
sid2wav: commande introuvable
sid2wav: command not found
sid2wav: käsku ei ole
sid2wav: không tìm thấy lệnh
sid2wav: komanda nerasta
sid2wav: Kommando nicht gefunden.
sid2wav: kommandot finns inte
sid2wav: komut yok
sid2wav: nie znaleziono polecenia
sid2wav: níor aimsíodh an t-ordú
sid2wav: no se encontró la orden
sid2wav: no s'ha trobat l'ordre
sid2wav: opdracht niet gevonden
sid2wav: parancs nem található
sid2wav: perintah tidak ditemukan
sid2wav: príkaz nenájdený
sid2wav: příkaz nenalezen
sid2wav: команда не найдена
sid2wav: командата не е открита
sid2wav: 命令找不到
sid2wav: コマンドが見つかりません