playlist for miniplayer SL

I've tried adding a playlist from my pc to my player, but it doesn't work (or I'm doing it wrong). When I try to create one from my player, I can't push the enter button... only the forward or back button.

What am I doing wrong? And why isn't my enter button working?

The miniPlayer uses a special playlist format, so you cannot natively create a playlist. However, you can convert them using this program:
[Release] Meizu Playlist Converter

As for the enter button, you have to hold it for about one second until the song/artist/album starts flashing, and that confirms you have added it to your temporary playlist. Make sure you go into Music->Playlists->My Playlist and select save at the bottom if you're satisfied with it.