I think a dl comes as a limewire document when the file your dling as a name of more than 31 caracters (the limit for os 9 is 31 caracters, 256 for os x) just be sure tu add the right extension to the file (.mp3 if music, .avi or .mpg if movie etc....) OR try to open the files within the apps you suspect they would run (i.e. iTunes for music).
Sorry, Os9 is showing it's age... (don't you feel the os x appeal
).
Bonne chance