I can not play long divx movies on my dv400 from my hard drive. I noticed it will play movies that are 2 hours long but not longer. Any solutions.

I also noticed that if i add more movies to my hard drive it will not keep the movies added in order.Example: a,b,c,d,e. If I add more movies to a,b,c,d it will be a,b,c,d,a,b instead of a,a,b,b,c,d.