An iPad.
Get a cast device or equivalent... and from all of the above cast to the device.
If not Ipad is it worth considering an android device with SPDIF out which would let you use your choice of DAC?
I use a ChromeCast Audio with the optical out to my DAC and amp... but an iPad to control everything.
I guess Android and USB DAC would be the way to go. Unless you mount it somewhere though it's much more awkward to use.
Or just use your phone.
@kkg337 started
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An iPad.
Get a cast device or equivalent... and from all of the above cast to the device.