Remote DAC connection to Computer -Shoot Me Now

That would have been my first piece of advice. Try to send files with some kind of a Mac just to make sure it isn't a windows issue. If it is, then you
May need a driver to make it work.

I did work with some of the Support Groups for the devices I tried. But, they are just not willing to work in-depth with you. While their products work with printers, scanners, and hard drives via wireless or ethernet USB, they just don't make considerations for a USB DAC. It's really too bad. Think how many other WIN users that will attempt what I did. I saw threads at different sites trying the samething I was attempting. The only solution I saw was to use Squeezebox and change the USB connection so that it would send music out thru its USB to the DAC. That change for the Squeezebox was a hack change and not supported by the Sqeezebox vendor.

Companies that specialize in USB interfaces can help with this if you buy the right gear. USB can outperform your CD player.

There are quite a few companies that are trying to jump on the USB bandwagon now that have little experience with this. It is just a checkbox for the marketing types I think.

Do they even tell you what kind of USB interface it is? Does it need USB 2.0? Adaptive or Async?

Another problem is that many of these USB interfaces are not great quality. I would not expect it to beat the CD player spinning a CD. You may go to a lot of trouble just to find that the CD is better.

However, if the quality is not great and the CD Player has a S/PDIF input to the DAC as well, then you can consider a high-quality outboard USB converter.

Steve N.
Empirical Audio

I'd be interested to see if you are able to send files with a Mac. Try and borrow some ones laptop before you purchase the Mac Mini. The OS is the same so that shouldn't matter.

Marantz,
The Audiolab USB input is looking for connectivity that supports asynchronous mode for its onboard Sabre chips. This requires a handshake via software drivers between your media serving computer and the dac to control clocking and data transfer rates. It seems clear that neither of your tried wifi devices will support this. True for (virtually?) all other such devices.

If you have access to a USB-to-S/PDIF converter, you might try streaming into the S/PDIF digital inputs of the Audiolab. These are running in isosynchronous or other similar mode, and won't have the handshake restraints of the USB port. This solution should also work with the Squeezebox (which outputs S/PDIF?) short of the hack SB adaptation that you already mention.

Most conventionally for asynch USB, just use a laptop or mac mini, etc. with direct USB cable (<15 ft)to DAC, running media software as per your Audiolab user manual. You can then remote network that computer with rest of home data system to your heart's desire.

Good luck.