I think the GUI should work like this (just proposals):
- 4 Start Interfaces: "Add Songs", "Add Albums", "Add Artists" and "Create"
- Easily add a Song, Album or Artist with "Checkboxes"
- Playlist is created with the 4th Button "Create" (so one can easily add Albums and single Songs)
- Name of Playlist is made by navigating through the Onscreen Keyboard from the Networking Interface