damn ... I forgot to post the followup answer ....;(
(it's old age)
have you thought of making your own
it's easy enough .... there are tons of sounds out there
audacity (and a bit of practice) will do the job of extracting the bit you want from a file
http://audacity.sourceforge.net/
it will even record the sound from your PC
(bbc iplayer, radio4 - from DVDs, films etc)
I think most non-clockwork phones can deal with MP3 these days ... and most come with transfer cables
a google of "transfer ringtone" should give some pointers as well