In line with what others have mentioned:

You could buy a 218 or 818v3 with a roon nucleus (or a NUC with roon rock). This would give you great streaming and both the convenience and performance of Roon. Yes, you do need Roon for this, even if you just stream from services. You will pay for both the software Roon and your streaming service.

Alternatively you could buy a 210 with a UPNP server and use it with tidal of qobuz. It will handle spotify natively, but your speakers deserve better. Don't ask why Meridian does not offer native support for tidal on the 210. It puzzles me, certainly with mqa in mind. This solution then requires a converter to convert your optical output of the tv to coax. This coax can be fed into your second input of the DSP speakers. The UPNP solution is slightly less userfriendly compared to Roon. The 210 will work with Roon too.

The cheapest option is add a USB/SPDIF converter and run it directly into the DSP input. You just use your laptop as a source. There will be a performance difference.

It all depends on what you want to spend, but you have started high up the chain with those speakers. They will reward you. I would recommend a 218 with a Roon nucleus +roon software and you have a capable system that is also easy to use.

Gr,
D

Main: DSP8000SE< 218 < Farad Super3 TMCB < PS Audio P10. Room correction: Focus Fidelity.
Second: Fostex Fe206NV2 < Audio innovations 500 valve amp < Wiim Pro +
Study: DSP33 < Reviver < MS200
Server: ROCK + Tidal on NUC, fiber on 2x cisco 2960, HD-Plex LPS.
Gone: DSP7200SEu, DSW, DSP5500mkI & DSP5000mkI, 508.20, 210