Strange... this is definitely not a ID3 Tag problem, since all the files have the same tags. Well, not the same, but similar.
Uploading wav versions is a problem for me (they are MUCH bigger), because I'm now using 58k modem
When the problem with my connection solves, I'll upload the files to a fast server, but for now this is impossible.
You could make *.wav from *.mp3 by yourself - there are lots of programs, which has this function, you can find free software of this kind in the internet. Or if you have some advanced sound programs, like CoolEdit, Audacity, or something like that, you'll be able to convert

Hm... I watched throug the files and...
What files did you get to play? "My World" and "Gothic attemt"? The thing is, they are not using ID tags - that's right So this actually may be the problem - I'll reupload last two tracks now...