Playlist/m3u support

first of all, thanks for this project. very helpful.

now, I'm not sure if playlist/m3u support is a standard DLNA feature, e.g. MediaTomb does support them. if it is - and if it's not too hard, like just adding a file extension to the code - is there any chance you could implement it?

the desired scenario is to use internet radio via DLNA (shoutcast url in m3u)

thanks for your time
