What i have done: I rooted the device ( so I am in standard rom 4.2.1) installed the trinity kernel, and your two zip files ( and the trinity instead of the CM10 kernel). No sound in the FIIO yet. Is there something I have missed? Do I need to also install another ROM - I thought that the trick was the kernel.
I will be willing to test what you like, so can you give me an advice of what to try?