Still new to this (2 months into owning my NAS) – I dumped everything off my PC into the NAS which included M3U playlists for music files; they are being shared and my Samsung TV (LE46B650) sees and plays the lists fine adding a “playlist” option under music.
Testing with videos - it doesn't appear to work; we don't get the "playlist" option.
Where do you keep the m3u files? In each individual directories? In the root directory that ReadyDLNA is scanning/monitoring? What directory names do you use in the m3u files to refer to the target mp3 files? relative addressing?