I suggest that you read dCS Guide to Computer Audio.
A laptop is probably not ideal. But if you can build a desktop (especially a fanless) with minimal components. For the initial build you can have wireless, blue-tooth, and other stuff. But once the desktop in finally configured remove them physically and also disable the controls in BIOS. Of course, you have to have interest (drive), to make your audio server, which is not only a wonderful experience, but can also sound great. You can then have dedicated players like Foobar or HQPlayer or others to play music. Audiophilestyle forum has ton of people who are enjoying their high end setups with purpose built servers. Point is that I would certainly NOT dismiss computer audio for playback in a high fidelity system. And I just noted a few others that are in agreement with that.
If that is not what interests you, then the streamers suggested above are probably the way to go.