Volumio is free for spotify users👍, I use volumio on raspberry pi project, it works very well. control via iPad and Android phone, the control works very well. There is a minus point, linking to a qnap Nas does not work for me since the last update. pity. pairing these types of devices should be easier. With DLNA it works with a detour. you can upgrade to TIDAL against payment of € 3,- pm, but I would like to buy this off once for € 50,- instead of now € 150,- is not proportionate. unfortunately for Volumio. I'll stick with spotify as long as it stays free 🤫. but the sound quality through the usb port is formidable even if others claim it gives much more noise blah blah. trying out. so thanks again for your free project support👍👍