[DJ Mogarych]

Powershell:

Код:

dir "D:\temp" -Recurse -Directory |% {
    if ($_.GetDirectories().count -eq 0 -and (dir "$($_.fullname)" -filter "*.mp3" -OutVariable files)) {
    cd "$($_.fullname)"
    & ffmpeg -i "concat:$($files.name -join '|')" -c copy "..\$($files[0].Directory.name).mp3" -y
    cd ..
    del "$($_.fullname)" -Recurse -Force
    }
}