im having a similiar issue but its when i use windows media player for music, i havent tried any videos yet. When i go to the library and choose a song it will start to play the song but it always freezes before the song ends and usually wont even play for more than 30 seconds. But im fairly sure that its a bad sdcard or a corrrupt file on the sdcard, because i only noticed the problem after adding 8GB of music to my 16GB sdcard and my sdcard is getting pretty old and has been formatted and reformatted quite a few times and used for a while in several different devices. So later tonight im gonna try to use one of my newer 2GB sdcards that i use strictly for rom flashing and download about 1GB worth of music and videos that ive used before and have functioned on every previous version of Bhars rom and then test windows media player again and see if the media player works with the new sdcard and mp3 files and mp4 videos that ive used before and i know are good and see if that fixes the problem. I think it will simply because i only noticed the issue after adding alot of music files,8GB, to the card.