When I ripped my files I did not see the implications and paid too much attention to micro$ofts marketing hype about the superiority of WMA. I'm now ripping new stuff to MP3.

Anyway, I did try JReceiver and got stuck Scanning. It seems to have problems with most of my files. I move some of the files it chokes on and it goes a bit further but then stops again. I haven't had time to work on it more.
Thanks for the suggestion.