From fast4x in the RiMusic Telegram channel:
Hi all, i can only say that i am very sorry and that unfortunately the project cannot continue to be a music streaming app based on YouTube.
It is unfortunate this happened to such a good FOSS music streaming app. Hopefully, someone can continue it.
To all the people who contributed to RiMusic all this time, thank you for making a great music streaming app!
As well, thank you fast4x for working hard each week to get RiMusic to where it is.
First Vimusic, then og Innertune and now Rimusic. My guess is that there’s some legal action going on behind the scenes and Google is trying to kill off all those apps. Either way, they all will most likely become useless once Youtube is done rolling out their DRM. Was a short but nice time with them.