here is a link to one that i had downloaded before:
http://www.wdw-photos.com/wakeup.wav

it is a great website with links to sound bytes from all over disney:
http://www.wdisneyw.co.uk/sounds.html
there is a link on there for the monorail messages, it just brings me right back. all i have to do is close my eyes and imagine that i was there.
at the top of that page, if you click on resources then movies, there are video clips with sound of wishes, spectromagic, and illuminations, etc. check it out, it is really great to watch before you go, and when you got back to remember what you saw (good for the kids too

)
good luck!
jen