Have a look here
for the winamp entries.
For the OneNote, see if you have this registry entry and remove it
HKEY_CLASSES_ROOT\Directory\shell\Browse with ACDSee
For the Asian characters? See if there are shell entries that match?
HKEY_CLASSES_ROOT\Directory\shell\(The asian characters)
Always a good idea to back up registry first Registry - Backup and Restore
BTW, those are Context Menu entries