PowerShell で iTunes に 一括インポート

gistfile1.ps1

$global:it = New-Object -ComObject iTunes.Application
while($global:it -eq $null)
{
    Start-Sleep 1
}

$global:artist_name = ""
$global:album_name  = ""
$global:truck_name  = ""
$global:truck_no    = 0

ls -rec | select Fullname, Extension, Attributes | where {$_.Attributes -ne 'Directory'} |sort Fullname | foreach {ImportWav($_)}

$global:it.Quit

function ImportWav($arg) 
{ 
    $args = $arg.fullName.split("\")

    $artist_offset = $args.length - 3
    $album_offset  = $args.length - 2
    $truck_offset  = $args.length - 1

    if (($global:artist_name -ne $args[$artist_offset]) -or ($global:album_name -ne $args[$album_offset]))
    {
        $global:truck_no = 1
    }
    else
    {
        $global:truck_no++
    }
    $playlist_name = $args[$artist_offset], " - ", $args[$album_offset]
    $playList      = $global:it.LibrarySource.Playlists.ItemByName($playlist_name)
    if ($playList -eq $null)
    {
        $playList = $global:it.CreatePlayList($playlist_name)
    }
    
    $global:artist_name = $args[$artist_offset]
    $global:album_name  = $args[$album_offset]
    $global:truck_name  = $args[$truck_offset]
    
    write-host $arg.FullName, $arg.Extension, $playlist_name, $global:artist_name, $global:album_name, $global:truck_no, $global:truck_name

    if ($arg.Extension -eq '.wav')
    {
        $sts = $global:it.ConvertFile($arg.fullName)
    }
    elseif ($arg.Extension -eq '.mp3')
    {
        $sts = $playList.AddFile($arg.fullName)
    }
    while($sts.InProgress)
    {
        Start-Sleep 1
    }
    foreach ($track in $sts.Tracks)
    {
        $track.Artist       = $global:artist_name
        $track.Album        = $global:album_name
        $track.TrackNumber  = $global:truck_no
        $track.Name         = $global:truck_name
        if ($arg.Extension -eq '.wav')
        {
            $playList.AddTrack($track)
        }
        write-host "    -> ", $track.Artist, $track.Album, $track.Name
    }
}