After the issue found and solved by swiergot (http://sourceforge.net/tracker/index.php?func=detail&aid=3532724&group_id=129766&atid=715782), here is another one : Samsung Smart TV expect mkv files as Content-Type = x-mkv whereas it should be x-matroska.
Therefor 2 solutions :
- change the mapping in config.xml. Samsung TV will play mkv but other players will no more do !
- apply the attached patch, which will make Mediatomb show mkv files as "x-mkv" or "x-matroska" depending on the renderer