Windows 7 - creating a local library with network shares/drives
A follow-up to this question: Add a network folder as a readonly Windows 8 library location
When I try and add a network share to the Windows music library (via right-click on the library in explorer, Properties, Add.., select the network folder, click "Include folder"), I get a message that the folder can't be included in the library because it's not indexed. The help seems to suggest that I can fix this by making the folder available offline, but that would mean copying it all locally, which would eliminate the much of the point of putting this on the network.
Is there another way to allow the network drive to be indexed? Or to force windows to ignore the indexing requirement?