Hi, I’m currently out of Raspis but have an old smartphone here.
Would be great to run Volumio on a dedicated smartphone and play the music via the headphone cable on my stereo.
Just an idea 
The key would be to deploy a new ROM.
Hey, sounds like a great Idea! Volumio on an old smartphone. I my old htc could have a purpose again 
Here is a screenshot.
Sorry but that’s completely out of our scope…
And plus, we don’t have the skills to do that…