Windows 7: Media Centre not finding all my music

Hi I have a problem with windows 7 media centre. It does not seem to find all my music. I have a file with 10 albums in. It finds the file but only 2 albums are shown.

Any ideas what I need to do to correct this?

Am I the only one with this problem ?

Go to Tasks>Settings>Media Libraries>Music>Next>Add Folders to the Library and just follow the simple steps there.

What format is your music?

I have tried adding the music file to the library and most of it goes in, but not all. I know I could specify the exact folder that needs to be added, but there may well be others I dont know about yet. So trying to find out why its not working properly.

The files are bog standard MP3'S

Any of the subfolders have different permissons than the ones that work?

The folder in question, has 10 different albums in. It recognises 1 complete album and 2 tracks from a 2nd album

Do any of them have different permissions? Pick one that works and one that doesn't and compare permissions. Are they all the same sampling rates, etc?

The albums are all 128kb. Not sure how to check permissions?

i dun like wmc, it is slow at synchronising music and videos