WMP seems to have lost all my Flac tags?

So i have a massive Flac library. and i have WMP tag plus plugin installed.

All my music files are on their own seperate hard drive (F. Originally i had just put the seperate folders for each artist directly on the root of F.

(F:\artist folder)

this worked for a while and then somewhere down the line i had to make another folder on the root of F: and then replace all artist folders inside that. (to clean up some sharing issues i believe)

(F:\Music\artist folder).

This also worked fine for tags. for a while.

I had shared the root drive originally, and also shared the F:\Music folder as well. after i had created the F:\Music folder and shared that, i UN shared the actual drive.

Now, this was STILL fine for a couple of days. I had a fully shared library with songs correctly tagged with album art.

But today i turned on WMP and went to wirelessly play music over my home network to my xbox. (using the xbox menus to acces the music on my comuter.)

While music was playing through my xbox i sat at the computer to look at my library only to see if i could "play to" the xbox from my computers WMP. as it turns out i couldnt but i also couldnt "play to" my laptop... which has always been possible because i do it all the time. (it was on and available.)

Just i noticed this, my artist library on my computer started to collapse into an "unknown artist" folder.

I literally watched this happen. all my album art just fell off the screen and now not one song has any tags. everything is under "unknown artist" - "unknown album". ive been fiddling with my computer for an hour now i cant see the problem. I have noticed that the .flac files on my computer now have a different icon representing them... and i dont know why that is either.

So i guess my question is, why no more tags?

its literally a never ending battle to be able to play my music with WMP, but its almost a must to be able to play everything wirelessly throughout my house. I Dont understand why microsoft cant get this to work.

I hope i explained myself clearly enough. thanks for the help.