We recommend using UTF-8 ascii text when "building" your playlist.
There are a few different XML playlists that Wimpy will accept: Wimpy XML playlists, RSS / Podcast playlists and XSPF playlists. Wimpy will also accept playlists of the following format: PLS, M3U and M3U extended-- however, these kinds of playlists must be loaded using an external file and the data can not be loaded directly into Wimpy. Only XML playlists can be loaded directly into Wimpy.
The only alternative to loding a text-based list into wimpy is to load a single line of code, where each item is seperated by a "pipe" character. See example #2.