Windows 7: Adding Folder to Library Returns Error "this network l

I am trying to share my MUSIC folder on my Windows Home Server (WHS) to my Music Library. Here is how my MUSIC folder is organized:

MUSIC
-> Songs1
-> Songs2
-> Songs3
-> Songs4
-> Songs5

Pretty simply structure, so thought this should not be a problem. If I add the entire folder to the Library only 1/3 of my songs are listed. In trying to understand what is happening I found that only 2 of the 5 sub-folders under MUSIC are included (Songs1 and Songs5).

Starting over, I removed the "MUSIC" folder from the Library and then proceeded to add each sub-folder indivually. What I found is I could add 2 sub-folders (Songs1 and Songs5), but adding the other 3 sub-folders returned an error message, "this network location can't be included because it is not indexed". If I add any new folder under MUSIC I can't add it to the Library either.

I'm thinking this has to be some type of security or user issue but can't think of what it would be since some of the sub-folders under MUSIC can be recognized, while others, including new folders, can not be added. Anyone have any suggestions?

I would like to add that I have no problem with adding my Video or Photo Folder to Library from my WHS.

*** SOLVED ***

I solved the problem. Not sure why, but even though "Allow files in this folder to have contents indexed in addition to file properties" was checked, it appears this wasn't indexing. What I did was to select the directory that was not showing as being indexed, unchecked that box ("Advanced" under the "General" tab for folder properties). The clicked "OK", returned to the "General" tab and clicked "Apply". Pop-up box will show confirming attribute changes, select "Apply changes to folder, subfolders and files", "OK", then "Apply" and then let Windows update the attributes, then press OK to close the dialogue box.

I then went back in and check the box to "Allow files in this folder to have contents indexed in addition to file properties" and apply to the files, subfolders, etc. I was now able to add this to the Library without any notification / error, the "Add to Library" also pops-up as option when right click on the folder (this wasn't an option previously).