That's going to delepnd on lots of things...your speed, host(s) speed, how many hosts you're downloading from, how those hosts are sharing their bandwidth etc etc. There's no way to give you a time

Be a bit careful with movies, lots are fake. Check a file with Bitzi before download. If the file has heaps of sources but no Bitzi rating, chances are that it's fake. Preview a download after 10% to check that the file looks ok.
How to use Bitzi

If this is your first try with LW, make sure that you read the stickies around the forum Here are a few to start with.

Fake files showing up in search results
How to find music
Configuring LW for best performance
WARNING: Viruses on the network you should be aware of