Hello all and thanks for any help in advance.
I have a ruby on rails application in which I am attempting to stream audio through jPlayer, which is hosted on S3. So
Well it appears that the only issue was a lack of brackets around the mp3: url part of jPlayer("setMedia"....
so it should have been (...).jPlayer("setMedia", {mp3: url}).(...)
(...).jPlayer("setMedia", {mp3: url}).(...)