2 ideas:

1. A foobar plugin that can be as simple as highlight your playlist > right click > export > FTP. Obviously the coding part would be harder. Maybe even have it bound (bind it) so that when your playlist gets updated, so does the file on the server.

2. Amip + Curl? I have my current now playing song set up to be sent to an image. Perhaps Amip + Curl could send my playlist to a text/html file? I have a feeling this would be easier, but once again, I am not sure how to do that.

Would anyone be willing to create a plugin to do this?