Hi. Have these tracks set artist/album correctly ?

Hi,

I have just started using the media monkey app on windows 8 and think it's great ... however...

I store all of my music in one file on an external hard drive. Almost all of the files are visible on media monkey under artists/albums, but a few aren't and I have to search for them through the file options within MM. Once selected they'll play but if I save them to a play list they won't appear. What am i doing wrong?

Cheers,

Pete