In my current setup, I have a Chromecast plugged into an Audio Receiver which then channels all the sound to my surround speakers and it works like a charm.
Recently Google came out with a new version - Chromecast Audio (though I like to call it Chromecast Music). With this, the BEST part is that I can sync my music not just across the speakers that are attached to my Audio Receiver but also to other Bluetooth speakers in the house in other rooms. I really enjoyed the experience while playing some podcasts (to my pleasant surprise, these worked well with the PocketCasts app which is fantastic!).
Overall, this solved a problem that I didn't know I even had. Excellent clear sound, no lag and the best part, it works and syncs across all your rooms. Check it out at Best Buy - http://bby.me/bhxd
disclaimer: The reviewer has been compensated in the form of a Best Buy Gift Card and/or received the product/service at a reduced price or for free.
disclaimer2: In all fairness, I have owned Chromecast in the past so I whole heartedly endorse this product as an active user!