This weekend I found the need to set the Media Meta Tags in MP3 files I have RIPed.  I found this Huddled Masses article for using the taglib-sharp library.  I find Hashtables as a convenient machine for passing Pthese kinds of adhoc Name\Value pairs.

[void] [Reflection.Assembly]::LoadFile(".\taglib-sharp.dll")

function SetMedia-Tags
  ( [System.IO.FileInfo] $File=$(Throw "File is required")
  , [hashtable] $Tags=$(Throw "Tags are required"))
{
  $media = [TagLib.File]::Create($file.FullName)
  foreach ($tag in $Tags.keys)
  {
    $media.Tag.$tag = $Tags[$tag]
  }
  $media.Save()
}

I used this code in a more specific project for organizing Audio Book MP3s I'll describe in a subsequent post.