By wired we mean use RCA or digital audio connections from your source (phone/streaming device) to your amplifier directly. Wi-fi or wired networking can typically carry all the data you need without a problem.
Not sure I saw you answer what it was that you intended to play back, but certainly the Bluesound Node2i is one of the more popular devices built around high quality audio streaming and would be the way I would go. Even with a $550 price tag, it's still likely cheaper than getting a new phone, and gets you where you want to go with a very solid solution.
The Bluesound NODE unlocks the world of hi-res music streaming and multi-room audio to create a modern addition to existing hi-fi systems or your favorite set of powered speakers.
www.bluesound.com
Sonos is an option and has a lot online 'used' which could be more of a bargain than something new.
Oh, and just dropping a CD into a CD player works!