Andover Songbird. I know this thing has been discussed here, but I was googling "Replacement for Apple Airport Express" and wasn't having much luck. So I thought I'd throw this out there. I just picked one up from my local HiFi store, it's what they recommend for an inexpensive solution at $149. It's actually more capable than a Airport Express as it does high resolution 24/192 as well as AirPlay and Bluetooth.
The Songbird HiFi Streamer delivers internet streaming audio to any system, new or old, in plug-and-play box. Access and stream your favorite services including Spotify, Qobuz, TIDAL, and iHeartRadio over your WiFi network. Free app to control. DLNA and Airplay compatible.