As I understand it, you are pretty safe. It's not *you* accessing the content.
The Tor guys recommend you have a web server on the machine which says "This is a Tor relay", presumably so that anyone who finds your machine during an investigation will know what is going on.
Two experiences of running a tor exit relay. One good, one less good:-
http://blog.torproject.org/blog/five-years-exit-node-operator
Good call. I was about to suggest this myself.
I have used MP3FS and it worked perfectly.
It's *the* ideal solution for people like me who like to have high quality audio on their computer but are limited to MP3 on their MP3 player.
Nothing will ever be attempted if all possible objections must be first overcome. -- Dr. Johnson