I have Windows Vista Home Premium 32 bit and Music Converter 13.4.

I have a game music website which I'm setting up. A lot of people upload music files but they also include sound effect files which are only between 1-45 secs in length which I don't allow because they're not really music. So I want to delete them. In Windows Explorer, to avoid having to manually hover the cursor over each file to see what it's length is, I just sort the files by Length. Then I only have to hover the cursor over a few files instead of 100.

My problem is that about every 100 albums I check, there's usually 1 album that doesn't filter the tracks once I click on the "Length" button in the toolbar. The tracks are of random lengths. I've uploaded some files from the latest album where I had this issue:

http://downloads.game-soundtracks.co...ot%20filtered/

Please download them, filter them by Length and then hover over each file to see for yourself. Why does this happen and can you fix it? Thanks.