Hoping someone can help me as I have, thus far, been unable to solve the issue. I am running a media center utilizing Ubuntu 12.04. I was initially successful accessing media files from the desktop running Ubuntu via my Windows 7 laptop and Roku device. I started backing up a new batch of DVD's I had (into MKV files, like everything else in my media folders) and noticed I cannot access the new files from either the Roku or the laptop. I have not changed any settings in the media folder and verified the shared permissions. The parent folder (Media) is shared (with permission flow-down) while the subfolders (Movies, TV Shows, Music) are not. I have changed the permissions on this to include shared when the access problem arose but with no success. I can only access the original files uploaded an not new files added. Any suggestions??? Thanks in advance for any and all help.