Download Podcasts and Channel9 feeds using PowerShell

PodcastDownloader.ps1

$feed = "http://channel9.msdn.com/Shows/Azure-Friday/feed/mp4high"
$destination = "AzureFriday"

mkdir "~\Desktop\${destination}"
cd "~\Desktop\${destination}"

$a = ([xml](new-object net.webclient).downloadstring($feed))

$a.rss.channel.item | foreach{  
    $url = New-Object System.Uri($_.enclosure.url)
    $file = $url.Segments[-1]
    if (!(test-path $file))
    {
        Start-BitsTransfer -Source $url -Destination $file -Asynchronous
    }
}

Start-Job { 
    While ((Get-BitsTransfer).JobState -contains 'Transferring') {
        Get-BitsTransfer | Where-Object { $_.JobState -eq 'Transferred' } | Foreach { Complete-BitsTransfer -BitsJob $_ }
        Start-Sleep 5        
    }
}

My version with proxy support https://gist.github.com/marcelodeaguiar/857f35114b15f4015ff9