Apps similar to Balena Sound include Volumio, which is open source with a free version. Other options are piCorePlayer and RuneAudio. In total there are three Audio Players like Balena Sound for Linux, Android, iPhone, iPad and self-hosting.
Volumio is a free and Open Source Linux Distribution, designed and fine-tuned exclusively for music playback. It runs on a variety of devices, typically small and cheap computers like the Raspberry PI, but also on low power PCs, notebooks or thin clients.
Italy
EU
piCorePlayer is a software emulation of a Squeezebox network music player that runs exclusively on the Raspberry Pi.
United States
RuneAudio is a free and open source software with one specific objective: to transform an embedded platform (a cheap, silent and low-consumption mini-PC) into an Hi-Fi digital music player.
