HELP! Streaming to my old school audiophile system

HELP!  I have a complete old school Nakamichi setup I've collected over the years (Stasis PA-7AII amp; CA-7A Pre-amp; ST-7 tuner; RX-505 tape deck; Dragon tape deck; MB-1 CD player; JVC turntable; all playing through my four JBL 4311B's).  I want to be able to wireously stream music through this system but don't know where to start nor how to hook such a device to my pre-amp.  Do I need a network streamer?  A DAC? Another pre-amp?  All of the above to do this right?  I've looked at the Cambridge Azur 851N, but are there alternative devices.  I also hear over and over again that AirPlay is the best media to stream with.  Help!  I'm lost and need educated and pointed in the right direction with a device or system that won't cheapen the sound my old school set up currently produces.