Those bitcoin addresses are..., well they look like gibberish: 1LVyTtygdCnESJcQWE136nxKjNr6s4qB5f for example.
So I decided to invent a new way of transporting them: as audio!
With
http://www.vanheusden.com/baa/ you can convert any bitcoin address to an audio-sample of (at least) 0,32 seconds!
The website includes the software package (with included a document explaining how they are created) for creating those files and an example.
Decoding the files is left as an excercise to the reader. Hint: doing an FFT should be enough.
(yes it is a gimmick but maybe some decide it is not or maybe it inspires others to new better(?) things)