The media players do not care about the mime content types sent in the HTTP header, but in some situations it may be useful to be able to specify it. Perhaps if you want to use llink with a browser.
The syntax of the mime.types file is:
# MIME type Extensions application/octet-stream bin dms lha lzh exe class so dll application/ogg ogg
mime.types file now ship with llink, as it is required by UPNP.
The 2.3.3 version of llink now build playlists when Browsers are detected, which will launch your mediaplayer of choice, for example, VLC.