I spent last night searching the internet for solutions. I have 3 sources: spotify on ipod/iphone, iTunes on ipod/iphone, and xmradio app on iphone/ipod. I'm trying to figure out whats the best way to wirelessly get it from ipod/iphone to my tube amp. If the quality is good enough, I will retire my cd player. So I see bluetooth which seems to be the lowest quality streaming from ipod/iphone. Next I see wifi solutions, some inexpensive (chromcast audio) and some very expensive (sonos). I am playing my music through a less than audiophile system so I was wondering if chromecast audio would be good enough. I found some chromecast audio warts on sale for $20 at Walmart so I'm gonna get those and try them today. I want song selection and volume control from my iphone/ipod and reasonable fidelity. How does that sound? If Spotify via chromecast audio is good enough, I just may kill my itunes music and reload the iphone/ipod with spotify downloads and stream beyond that. The xmapp amy get sidelined also or get another bluetooth receiver and use that for lesser quality audion listening to that content.....it's a journey.....