PowerTag is a project mainly written in Visual Basic .NET, it's free.
Provides CmdLets to show and edit tags from media files.
PowerTag is a powershell SnapIn, that provides CmdLets to query and manipulate tags from media files (.mp3, .ogg, .avi ect...).
Install
Enter the directory, where you stored the binaries and type '.
If your policy does not allow unsigned scriptes, you need to sign the files 'PowerTagFormats.ps1.xml' and 'PowerTagTypes.ps1.xml'. See 'get-help about_signing' for more infos.
Use 'Add-PSSnapin PowerTag' to insert the installed snapin into your powershell session.
To get a list of all provided CmdLets, use 'Get-Command -PsSnapin PowerTag'.
Use 'Get-Help