I have 2 Pi2 unit, I use both for parellel listening in flaw way since some time so I'm pretty sure the unit are working.
I'm used to use RUNE the more because I like the sound, but I use also Volumio and Daphile
I bought recently the new R2R and i started testing yesterday, everything is ok using windows or daphile, when using Raspy I recive a redundant message "audio device is changed" on Rune while with Volumio system alt without particular other signs
I'm starting to think is an HW issue, anyhow I have changed USB cable, Unit, memory card just to skip surprises and I have also changed the way I power raspberry (Using a multiUSB unit and the Samsning note 3 USB charger)
I wrote Kingwa to understand is something may be changed with Amanero interface, I had in fact to re-install driver on window
No idea now about how to go on, a bit frustrated ....Ideas ?
Yes give a try to more "up to date" software with a fresh kernel and set of driver :
Picoreplayer : https://sites.google.com/site/picoreplayer/home/news
Max2play : https://www.max2play.com/max2play-image/
If the USB interface work under Windows it cannot be hardware related.