Fixed double tooltips ("Mute", "Umute", "No audio") in windows XP.
Minor grammar fix.
Merge pull request #82 from crdx/patch-1

Minor grammar fix
AviSplitter: MAXPACKETS_AVI increased to 1000 (more stable playback on old Semptron).
fixed "error C2039: 'IsEmpty' : is not a member of 'CListBox'" after b45f3796b0
Cosmetics: Rename some variables to make clear they are member variables.
DVBSub: Add an assert.
Don't pass structures to printf like functions.