dl.zip

[Reflection.Assembly]::LoadWithPartialName( "System.IO.Compression.FileSystem" )

$urlPrefix = "http://www.pumpproplus.com/downloads/simfiles/pe00/pe"
$urlExtension = ".zip"

For ($songNumber = 0; $songNumber -lt 100; $songNumber++)
{
    $formattedSongNumberString = "{0:D2}" -f $songNumber
    $localFileName = $formattedSongNumberString + $urlExtension
    $localFilePath = Join-Path $pwd $localFileName
    $fullUrl = $urlPrefix + $formattedSongNumberString + $urlExtension

    Invoke-WebRequest $fullUrl -OutFile $localFileName

    [System.IO.Compression.ZipFile]::ExtractToDirectory($localFilePath, $pwd)
}