WMA (ASF) Controls 

Professional Tag Editor
Features Overview
What is ID3 Tagging ?
What is WMA Tagging ?
For Developer
ID3 Controls
WMA Controls
How it works (ID3v1)
How it works (ID3v2)
How it works (WMA)
WMA vs. MP3
Version History
About / Permissions
Professional Tag Editor provides many controls to work with WMA files. All of them used in Professional Tag Editor Application. TagInfoControls project contains all WMA controls and ID3 Controls. There is more control in project.

Picture Editor (WMA):

WMA files lets you attach a picture to them. This control lets you manage this image.

Professional Tag Editor WMA picture manager
WMA picture Manager

Text Information Editor (WMA):

This control manages all text information of WMA file.

Professional Tag Editor Text Information WMA
WMA Text information manager

There is more controls to manage WMA data. All of them used in Professional Tag Editor application you can see how to use them in source code.