DVD’s with Windows Media player

I have used File Monitor while playing DVD’s in Media Player, and Winamp. What I have noticed is that the DVD is being read 65536 bytes at one time. I am using Elecard’s MPEG2 decoder pack as Media Player filters, and I am using the VID2WA plugin for Winamp. The sound is fine until I configure the MPEG decoder to decode I, P, and B frames. I think that 65536 bytes being read at a time can cause this. Is there any way I can change it so that a different number of bytes is read from the disk at a time? (maybe like 16384)