Mpeg4 video files don't get recognized by the two different 8 gb MISSIL players my 7 yr old daughter & her mom got for gifts. They realy want these things to work. I thought the mp4 files I'd downloaded would play once put into the video folder but they don't. Once I did get to the point where it asked if I wanted to build list after putting mp4 files in the video folder, I said yes, it sat there for a while and did it's thing but after that when I went to the "movie" selection in the player's main menu it said the disk was empty. Also, there is no "video" selection in the main menue; "movie" is the closest approximation. Mp3 files will play once in the music folder though. I installed the player disk tool utility software, but it even after my computer has obviously recognized the device and I put files onto it the utility software will not & instead exclaims the message "Not detected removable disk! Please check the disk connecting, or reboot system!" Confounding these problems I cannot find the instruction manuals, they may have gone out in the trash. I can't find these manuals online or a website for missil online. I did find a street adress and phone number for a Missil electonics manufacturer Sweden. Missil.com is useless. Weird. Perhaps I need to convert the files to the proper screen sizes. I downloaded a converter from mympxplayer.org but am oblivious to the resolutioh of the player's screens. Missil 8gb and both are advertized as 1.8 in screen size at Davis (http://www.davismicro.com/MP4-Players-st1-sid1.html?gclid=CPuVxLTD954CFREMDQodPB9Byg) but when you look at them the screens are obviously different sizes physicaly. The players are different shapes too. One is the longer version, the other is nearly square.