Well Well, just goes to show,going from incomplete folder on disc,clicking on file,vlc player offers option to ''Repair Avi File'' (This might take a long time) if I click '' NO'' I get to 'Preview' the file !!!!! If I click 'Preview' from Limewire, nothing happens, so have to go to ''Incomplete Folder'' anyway. So at long last I get to preview files.Thanks for help good people
Hope this helps others who can't Preview files with Vlc !!