Hi @donmako thanks for posting.
To be honest, I'm not sure of a concrete way to stream music from a laptop to a receiver.
You may be able to connect via a bluetooth connection, if your receiver is able to do this. The second option, and probably the more stable connection would be using an audio cable.
For more information on how to set up your music this way, I would reach out to Sony directly.
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If there are any listeners that have a similar set-up with their laptop and receiver, I encourage you to share in this thread.
donmako