Need suggestions for streaming files to my stereo


Hello everyone. I'm looking for a way to stream files (AAC, ALAC, FLAC) to my home stereo. The files are on my PC laptop, or on iTunes on my iPhone etc. I pretty much exhausted my budget on my power amp and speakers so Im looking for the best budget pieces I can afford to get the music flowing for now. I currently have Kef ks50s, a Red Dragon S500, a SMSL Sanskrit, and a Google Chromecast Audio.   I'll likely pick up a Schiit SYS preamp. 

With this current setup I can only pretty much stream Pamdora, since Itunes won't work with the CCA.   It's looking like the lowest cost option available is to use different software to handle the music files such as JRiver, or PowerDVD Ultra, but I'm unsure if this is the best way?  Any other ideas, software, hardware etc?  I have an insanely low budget of around $200 left to buy the rest, let's see what you guys can think of. 
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It has been mentioned here that many of the responses to the OP have not paid attention to the budget of $200. I, myself, admit to this error. But one must include the hardware cost of a computer. Like many of the newer (changing) technology with hardware associated with streaming digital it seems a more budget friendly option to just adopt newer software or even low cost hardware that attaches to a computer. The computer, itself, is a device that has limited life as a streaming device. HDD space, RAM and processor power, as well as software compatibility will become an issue.
I had wanted a separate device to stream my music. I want to keep ITunes and a computer out of the loop. Therefore, that is the reason I opted to go further with my budget to get a Bluesound Node 2.
At one time, I wanted to use an older MacBook Pro as an integral part of my audio playback, but alas it is too old and slow for this purpose.

Autre with your options I would ask myself which of these options would match your overall plans for a music playback system.
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Subscribe to Tidal and Roon - both have a free trial so nothing to lose. Roon can be used to control everything (files on your PC as well as a Tidal) with Roon’s Amazing interface (use an android or iOS device to control and browse music) and with excellent artists info from All Music database. Roon handles every format I can think of and Roon can play bit perfect to your DAC and is clever enough to convert anything that your DAC can’t handle to PCM at a suitable sample rate.

I am so impressed by Roon’s interface - really high quality and definitely geared at audiophiles who want to control quality to the Nth degree. Downside is $100 or so annual subscription but from what I can tell you could be up and running with no hardware purchases....
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I would also advise Bluesound Node 2. Of course, no one wants to give away $ 500, but management with your Android phone or your Iphone is priceless.