Budget System Advice still partying like it's 1999

The kid is out of the house and I have taken over his old bedroom as a Listening Room! 
I listen to a wide range of music but generally not too loud. The room is rather small with some acoustic treatments so I have a nearfiled listening set-up. 

Current system:
Amazon HD Music
Apple Airport Express 
MSB Link DAC (Toslink)
Music Hall 15.2 Integrated ( Toddler killed the Rega Integrated :-(  a true test of unconditional love. )
Triangle Titus XS
Rega Planar 

I assume the Airport Express / Toslink / MSB are obsolete. Is that true? Looking for suggestions for digital source upgrades that fit the system. 
Thanks