SqueezeBox receiver is still available from several sources for about £90. I've got 3 as part of a multiroom setup (separate Amps and speakers). All controlled from Phone(s).
And then there is the SqueezeBox Radio for £100. Excellent sounding mono all-in-one network player, can now be paired for stereo, and even battery powered (£30 extra for battery pack).
Contrary to the impression given by a lot of commentators and reviewers, all SqueezeBoxes can be network controlled and used as part of a multi-room system. You just need your PC or NAS box to provide the central server, and control it all from your smart phone (good 3rd party apps for iOS, Android, WP7 and Symbian), PC or any player with display/controls.