my limewire videos won't play the full length
 

I have fully downloaded a video - say 423 megs - and the file just plays the first 5 min or so and then ends (as if that was the full length).

this happens frequently for some but not all files

I am using MAC and quicktime but I tried VCL and still the videos don't play the full length but only part of it as if it were the full length.