FileChooser should allow disabling multiple selections

Multiple loads of movies is enable but the function is not available.
Step to reproduce:
1. Open ShowmeTV 2.0
2. Go to File and click Load File
3. Type /net/ctech83b/export/movies/jpeg
4. Hold down Ctrl key and make multiple movie selection
5. Click Open to load the movies



Notice that after the first movie finishs playing the second movie on
the selected list does not play.



###@###.### 2001-10-30
This bug is not reproducible . Maybe it's been fixed.