podcast-downloader.ps1

$dir = $env:USERPROFILE + "\Music\Podcasts"
$episodes = 5
$urls = @( "http://theblacktapes.libsyn.com/rss",
    "http://www.theblackdogma.com/tbd/?feed=podcast", 
    "http://impulseproject.info/feed/podcast/",
    "http://spkmdl.libsyn.com/rss",
    "http://www.ultimathule.info/xml/Ultima_Thule_Ambient_Music_Radio.xml",
    "http://rwm.macba.cat/api/en/all_podcast/80.xml",
    "http://alifewellwasted.com/feed/atom/",
    "http://nightvale.libsyn.com/rss",
    "http://www.kahvi.org/podcast.php",
    "http://feeds.feedburner.com/headphonecommutepodcast",
    "http://feeds.feedblitz.com/farpastpostPodcasts",
    "http://brainwashed.com/podcast/podcast_rss.xml",
    "http://liminal.libsyn.com/rss"
)

cd $dir
[Environment]::CurrentDirectory=(Get-Location -PSProvider FileSystem).ProviderPath

foreach ($url in $urls) {
    $a = ([xml](new-object net.webclient).downloadstring($url))
    $a.rss.channel.item[0..($episodes-1)] | foreach{  
        $url = New-Object System.Uri($_.enclosure.url)
        $file = [System.IO.Path]::GetFileName($url)
        $file
        if (!(test-path $file))
        {
            (New-Object System.Net.WebClient).DownloadFile($url, $file)
        }
    }
}