hello, sorry if I have been slow to answer you, but your solution to solve the problem of playlist only works for someone who wants to create one for very little title.
I explain that it works, it does not need subfolders where you want to put the playlist otherwise it does not find the songs ....
if you want to have a playlist of 50/100 titles as is often the case for me, we must put all the songs in bulk in a folder and not tidy by artist, album, song .... and of course on the playlist in the same folder.
But you also need to manually rewrite all the addresses from where the song folders are in the playlist creation program.
It makes me laugh because for 10 songs it works even if it takes time, but as soon as you want to create one of several artists it is impossible to do it ...
I find it tedious to search, try to waste time a lot of time to only create a playlist to listen to songs in his player ....
moreover for a reader whose promotion has been his ability to receive many songs, with this it is impossible for me to enjoy it out of the way of listening to an album by album .......... ...
besides even thinking of it since the time there are nomadic readers to carry music, I do not understand that in 2018 there is still the problem of being able to create playlist to listen to music while the players have more and more memory to store them.
While just a file manager that saves a selection of titles or folders MP3U, original in the player or create a facility for buyers (or customers) to do it with other tools.
But the concern of the N5 c is not to be able to read or find a song in a sub folder, and to have all the songs in the same folder in bulk .... as many years ago, I find this as a clear decline in the use of a product in the neighborhood.
Even if few people express it on the forum, I think it's a huge problem, as having a 2 GB SD card and having only some songs in a folder in bulk because having 400 GB to read album by album ....
in any case thank you for your reading, I am a little angry at the involvement of engineers to never have thought about this problem.