sndfile-resample: 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/sndfile-resample - from package: libsamplerate

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

On Debian possible default full paths are:

/usr/bin/sndfile-resample - from package: samplerate-programs

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

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