All the songs you've downloaded should be in one place, unless you've moved them. See sample image:
http://www.gnutellaforums.com/showth...994#post161994
If you're missing songs from your library, search your hdd. Try searching for one of the song titles that you're missing. This way should find them (unless they've been deleted by mistake).
I don't know what happened to your enqueue button
If you've selected to use the LW player then it should work. Tools > options > player, make sure 'use LW player' is ticked.
If you still have no joy, try deleting your LW preferences (while LW's closed). Instructions here:
http://www.gnutellaforums.com/showth...threadid=36420
You'll have to re-set your preferences within tools > options afterwards, so make a note of them before you delete.
**Please just reply to this thread rather than posting a new one...it's getting really confusing.