Have you tried the Bubble UPnP app mentioned here -
https://play.google.com/store/apps/details?id=com.bubblesoft.android.bubbleupnp ?
In terms of network shares, ES File Explorer -
https://droidboxforums.com/threads/file-managers-astro-es-file-manager-hd-and-root-browser.89/ , works pretty well normally. Scroll to the right until you see LAN/Cloud sections and click on the New + icon, then LAN.
Once the share is readily accessible in ES File Explorer, find your highest bitrate audio file, and try these apps (unless marked differently, search in the Play Store using the titles below):
n7player Music Player
Neutron Music Player (search for the Eval version) - some people state the audio quality is one of the best with this app, if it works on your device
PlayerPro Music Player (Trial version available)
Music Player : Rocket Player
Fusion Music Player
Poweramp Music Player (they have a demo version to experiment with before committing to paying anything)
jetAudio Music Player (again, go for the free/basic version)
Xplay music player
TTPod had a few mentions online, but the UI may not be in English initially. Try
http://www.ttpod.com/download for a direct link to the APK