I started the project Soundscapes a year ago. It was originally made with Scriptographer and The Echonest API v2.
After a long time without touching it, I ported it to processing and The Echonest API v3.
Here you can see how I generate PDFs and JPG files from an MP3 on my local disk.
I still have some little quirks on the PDF generation (especially the font used to write the artist etc... that is generated as Bitmap and not vectorial).
To have a closer look at the generated files
PDF > http://tinyurl.com/btyfyj
JPG > http://tinyurl.com/dbvcav
More infos on soundscapes : http://melka.one.free.fr/blog/?page_id=8
Song : Petter - Some Polyphony
I edited the video a bit, upload of the file took in fact much longer.