I have some video files which are MKV files and want to tag them and get artwork etc so I can watch them on my htpc with xbmc with all the info. Problem is, there doesn't seem to be any software that can do this on mac. On Windows I used to do this with ember media manager but that isn't cross platform. I can change them to mp4 and then tag them but those tags are not recognized by xbmc. Any ideas?