threw this together for my own use and thought i'd share.
just burn 'em to a cd or play 'em direct from your pc... what evah' works for ya'.
2 min. round
3 min. round
5 min. round
there's one minute of silence following the bell sounding the end of the round, so you can just put the track on repeat and automatically have two minute rounds with a minutes rest in between, etc..
make sure you save 'em cuz i'll be taking them off the server within a week or so.