Best music server for the money

Looking to add a music server to my system. Current equipment is a Theta pre-amp and 5 channel amp Wilson Duettes and a JL Audio f113 sub. I love the ease and convenience of the Sooloos but not sure about the hardware or sound quality for the money. I really do not want to use a computer but would prefer to load rip and go.
Any help would be much appreciated

Thanks guys