@droid him,
The best way is to get a video converter such as xilisoft. I know there are other converters out there but i have this one (xilisoft media toolkit ultimate). It converts any format to whatever format you want it to play on and on just about all media devices...from zune to psp, ipod/iphone, etc. I don't use the digital copy from dvd's or blue ray's because it's copywrite protected which limits you from watching it on certain devices and you can't make any changes to it. Using the converter to convert dvd's, blue ray and other media allows you to chose the video quality, sound, framerate, subtitles, language, cut scenes, and add deleted scenes.
If you're internet savy you can get the best converters for free...just have to search. Xilisoft ultimate isn't free but i got it off the web for 0$. I can't tell you how on here because this is a legit website. There are some that are free so do some websurfing.
Also find out what media formats the droid will play so you will know what to convert over to.