With LabVIEW, is there a way for me to programmatically change the properties of a wma file? For example, for a given song name (Song1.wma), I want to be able to change the album title, track number, artist name, etc.
It's the same thing, actually. Windows Media Player has an ActiveX interface so you can use it from LabVIEW. For instance, the "SetItemInfo" method will allow you to change certain attributes.