You did not answer my first question. Do the downloaded movie files play well while on HDD ? I ask this because, if these files play on the HDD, then there may be some configuration files, such as .ini files, that point to a path in them like C:\Users\..... When you move the files to USB, the association might get lost. If this is the case, then you can edit the .ini files to point to new location of the USB drive, indicating the drive letter of the USB drive and the folder, etc. the movie files are in.