I accidentally put Itunes into Recycle bin. All of the songs were deleted from my music and itunes but they werent deleted from window media player I need to know how to get them back.?

Uniinstall iTunes (start menu, control panel, add remove programs), then reinstall itunes. When installing Itunes it will ask if you would like to search (or import depending on the itunes version) music from your pc. select yes. This should solve your problem.