Windows Mobile not showing tracks properly?

[Guest olly_k]

Hi I have finally got round to compiling a load of tunes for my E650 first converted from mp3 to 96kbs WMA using Any Audio Converter, then I used file properties in explorer to tag all the tracks (I am sure someone is going to tell me there is a much quicker way to do all this for free lol) anyway on the albums I have converted and tagged when selecting Artist in the library I get to see one song and that is it...? Just as an example I select the artist, then 'All songs by artist' or, maybe the album name I have used, the list appears but I only get the first song and that is it! Everything else is shoved under Unknown :D

Anyone know what is going on? Is this a WMA thing because I didn't have this problem with mp3's...!