Thanks for your speedy response! Could anyone confirm that the stock software is the issue? Will a popular custom rom like Cyanogenmod work? It seemed like others who got it to work were on stock.

Could anyone help? I have an ATT Samsung Galaxy S3 and it will not recognize my Fiio E07K whatsoever. I tried the other suggestions in this forum and they haven't worked. I am not sure what I'm doing wrong. It is the stock US variant of the S3.