Accessing music on samba share
There are a couple of good samba network music players available on market. For starters you can take a look at Soumi: Network Music Player

Its keys features include..


  
  Plays music from shared folders on local SMB/CIFS network, e.g Windows share, WiFi drive, NAS, USB drive attached to router, etc.
  Plays music from FTP, FTPS, SFTP, and WebDAV servers
  Browsing and instant searching by artist, album, genre, and title
  Find, browse and play music by folder
  


Note; It offers In-app purchases for certain features



Other potential candidates include Kodi (which I personally use but is a bit tricky to setup and consumes a bit more battery power) or BSPlayer  which also allow playback of media files  directly via Wi-Fi from your network shared drives/folders.

Another option is using DNLA or UPnP (only downloadside is you need to setup a media server at the other end. In that case you can use DLNA players like Bubble uPnP or Plex.