Improving sound quality of streaming setup

What Steve (Audioengr) suggests is certainly a valid route. Then he also manufactures the product he's recommending. Just be aware of that.

Another option that would be very simple too is getting a laptop to be used for music only, and a DAC with asynchronous USB input. You would have a USB cable between laptop and DAC, and analog IC between DAC and pre, and that's it. The laptop does not need to be powerful. You could use iTunes since you are familiar with it. Then, choose a DAC within your budget, and with the output connectors that match your pre.

Later, if you feel like it, you can get an iPad or iPod to use as a remote. You would probably love this!

This should be rather simple to implement and not expensive, and will get your toe in the water.

My two cents.

My suggestion was an attempt to keep it simple, per the OP request.

bondmanp, if you are looking for a fan less solution look into the CAPS 2 servers described at computer audiophile.com.

I didn't mean using the laptop on his lap, but rather having it sit by the stereo, likely several feet away from his ears. Surely some laptops are still audible, but many aren't and still his priority is simplicity.