Well, playing the files is no problem, as I downloaded a pretty good codec pack and it pretty much plays everything I throw at it.

What I am using to preview is just Quicktime with said codecs installed, this particular file being an .mpg of no particular merit (as far as I know), and all I am doing is double clicking the file, as its downloading, in the download area of LW, and occasionally clicking on the "preview" button in LW.

I will, from now on, do as you suggest and make a copy of the incomplete file before viewing, as that seems to be the best solution.

Now my question is, is there any way I could repair the file?