Almost all Xemio's at this moment have the possibility to open playlists of the file format .m3u.
This is an open standard for playlists and you can create and manage them in different ways.
If this is not familiar to you how, you can use the program playlist creator:
You will first need to move the music onto your xemio. Once the music is transfered, you can make a playlist and also arrange it as you wish. If you then save this list to the root of your Xemio, you can access it from the play menu of your Xemio itself. It is possible to save multiple Playlists and select them in turn.