What do I Need in Order to Stream digital content and Store & Play CD's ?


I'm looking to upgrade my system in order to add capability for streaming audio digitally from services such as Tidal, as well as to store & play my cd collection of some 300 cd's.
My present system is: Krell 250m mono blocks, Thiel CS 6 speakers, PS Audio Lambda transport, Classe DAC 1,( no digital inputs/outputs for streaming.) Also have a nice analogue rig but not relevant to what I want to change. Neither is cabling.
What do I need to replace/add in order to accomplish this?

michaeljbrown
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BlueSound Vault2.  Real simple and it does Tidal HiFi and Tidal Masters MQA.