Hello, Im using PS3 as a media center. have a 2TB WD externel disk on my lan network connected to my PS3. When I play movies that are a dvdrip I can choose subtitles that are in the same folder even when they have a diffrent name. But when I want to play mkv files the subtitles wont show up. Does anybody know why? or how to solve this?

thank you and sorry for my english.