Normally it sounds like a jet planes engines, but now has almost a high pitched whine also.

To me a whine suggests a worn down belt.
Do you mean dryer? You say 'spin cycle' which sounds like you meant washer?

Your bearings are bad, most likely. You will need to tear it down to clean it and replace the bearings and belt.
You need to totally tear it down and scrape out and wash all of the parts except the motor, which you vacuum out. You can go to YouTube to see videos on how to take it apart, but do a very good job or it will fail again quickly. I would get a new belt and change it while you have it apart and get some white lithium grease and grease any bearings you find including the drum bearing you will replace. You need to clean out a drier every two years, at least, according to the manual. Go here for instructions: http://www.youtube.com/watch?v=XFlSo1cVGlo and: http://www.youtube.com/watch?v=MMP7BW1lLs4 Good Luck. DrTom4444