i'm trying to play movies off an 32g sd card and I can't seem to get it right, I've tried it in mp4, it's saying it's incompatible, I tried to look around on here but didn't see anything. thanks for your help  

It might have to do with the resolution. I use mp4's all the time using http://9xbuddy.com/ You just have to copy and past the youtube link and I choose 360p or 720 to keep the file size small. Video looks great too. You can also try the divx conver from divx.com and choose divx mobile as the output. Please also remember that if you have mp3's and movies you have to choose either vieo music or pictures from the headunit.