Change wma tags programmatically

I am attempting to develop a web app in VB.NET that allows modification of the internal keys in a wma file. There is a way to use the windows media sdk and C#, but it requires opening the file using the media extentions as if you were going to play the file which requires a sound card. Does anyone know if there is a way to modify the file directly and change the values of the keys? For example, change the Author and Title.

If there isn't a way, does anyone have a recommendation on how to handle correcting entry errors in wma files without having to manually find and edit each one. We are streaming several hundred of these files and if there is a change or some error occurs, I would like an administrator to be able to modify the files remotely through the same web app that we use to add/delete them. I can change the data that is in our database so the user sees the correct information, but when the user opens the file, the keys aren't correct. (windows media player scrolls the file information)