I use J.River MediaCenter which is all anyone needs to run a mediacenter. The OS is completely immaterial. I can use it on a phone,tablet and pc. In fact i have 3 Xoom's stationed permanently as remotecontrols for JRiver, hooked up to tv via HDMI. Works like a charm.
No need for flaky tiles, nor MS soon to be blackboxed Apple lookalike at higher prices but crappier system.