Can a file (doc, PDF, MP3, FLAC, MP4, AVI etc) simultaneously be functional and corrupt? What I mean is would a corrupt file be able to play normally until a certain point (where it is corrupt) and suddenly stop and display artifacts (skipping frames, distorted audio etc)? I'm concerned because I have a lot of music and movie files that got chewed up in this accident. I'm scrubbing through the video files right now, trying to see which ones I need to replace