cdda2wav: 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 CentOS possible default full paths are:

/usr/bin/cdda2wav - from package: icedax

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

Error in other languages:
cdda2wav: bevel nie gevind nie
cdda2wav: comandă negăsită
cdda2wav: comando não encontrado
cdda2wav: commande introuvable
cdda2wav: command not found
cdda2wav: käsku ei ole
cdda2wav: không tìm thấy lệnh
cdda2wav: komanda nerasta
cdda2wav: Kommando nicht gefunden.
cdda2wav: kommandot finns inte
cdda2wav: komut yok
cdda2wav: nie znaleziono polecenia
cdda2wav: níor aimsíodh an t-ordú
cdda2wav: no se encontró la orden
cdda2wav: no s'ha trobat l'ordre
cdda2wav: opdracht niet gevonden
cdda2wav: parancs nem található
cdda2wav: perintah tidak ditemukan
cdda2wav: príkaz nenájdený
cdda2wav: příkaz nenalezen
cdda2wav: команда не найдена
cdda2wav: командата не е открита
cdda2wav: 命令找不到
cdda2wav: コマンドが見つかりません