Take the 2-minute tour ×  Here's the background. I don't use
Windows Media Player or Media Centre, in fact both components
have been 'turned off' via the 'Programs and Features' option.
My media player of choice is a nightly build of MPC-HC, which
plays virtually everything. I do, however, have VLC portable
available for those rare instances when MPC-HC can't or won't
play something correctly.  This is the situation. I tend to
download various media files via torrent, typically, game
trailers or freely availably films, such as the recently
released, torrent only, Pioneer One. Quite often these files are
quite large, being 1GB+ so I quite often like to preview the
file after it has downloaded a significant portion of the file.
For the most part, this works quite well, and gives me an idea
about the worth of continuing the download. Sometimes, however,
the file doesn't play as expected and instead plays a completely
unrelated file that has been previously played.  Here's the
strange thing. if I try to preview t