Can’t resist. Here’s my higher-end system:
Roon software - $10/month
2010 Core 2 Duo mac mini running Ubuntu 16.04 and Roon core - $200 (used)
scavenged speakers from a discarded 1971 all-in-one Bell & Howell stereo - $0
Chromecast Audio on sale - $25
Fosi Audio 50 watt stereo amplifier, version 1.0 blue - $60
Amazon Basics 3.5 mm to dual RCA cable - $6
Oodles of digitized music - >$10,000
So $291 plus $10/month for Roon. The music is a sunk cost. And the bowl doesn’t count.
Update: Apparently “scavenged” is the wrong word; I’m told I should call them “vintage” speakers instead. I have to say, they still sound great. Maybe Bell & Howell knew something about making speakers.