Thanks fo the tip - I have tried changing the Quicktime MIME prefs, but RealPlayer still seems to override all. I have managed to recover some of the "Limewire document" files as Quicktime by shortening the titles and ensuring the full .mp3 extension is there though, wierdly, not all of them respond to that...
Still nothing doing for getting rid of the RealPlayer files though.
Grrr indeed.