(note: I haven't found any related topic through search or the FAQ section)
I own the SONY Network Walkman NW-A25 and it does not support playlists created by mp3tag since they are encoded as ANSI.
After playlist creation I have to manually open the playlist (as text file) with Notepad++ and convert the encoding format to UTF-8-BOM. Only then the playlist is recognized by my player.
What about an option for the encoding format of saved playlists?