If it's for streaming audio, then I can tell you the Pi is a no brainer. I was running LMS on an old computer, it's not an efficient solution.
Pi is cheap and efficient. Raspberry Pi + 1tb HDD works like a charm with Logitech media server. I bought the Pi used for 1800. SD card cost <500. HDD was lying around. I had an old squeezebox lying around. Integrated Chromecast audio in a snap. Streaming to a phone via BubbleUpnp is instantaneous. As of yesterday I activated Spotify and streaming through LMS. I had to read a few blogs and run a few Unix commands, I am no programmer or sysadmin, with some patience anyone can figure this out. I decided to explore the Pi route after seeing a video by Darko. After all these years he still talks like the Squeezebox and LMS are relevant, he is right!