This is a neat little program I found a few days ago and just got to try out last night. The program will strip a video file of its index and/or add an index to a file that doesn’t have one. This means that if you have a partially downloaded file which your player thinks is corrupt, this will fix it (on the other hand the file might actually be corrupt). Unfortunately I was only able to find a link to the main page, but under downloads and from there to their main software page. The site has more video editing programs, codecs and so on, than you can shake your stereo at (sorry I couldn’t resist). Disclaimer: I found no pop-ups and nothing but straight up, uninfected software; of course your milage may vary.