VLC is a free and open source cross-platform multimedia player and framework that plays most multimedia files as well as DVDs, Audio CDs, VCDs, and various streaming protocols.
Download the VLC app from App Store, then open it
Click on the top left corner (on the VLC logo)
Click on Local Network
If your file server is discoverable or you saved it, it will show up in the servers list
If not, click on Connect to Server
Enter the IP address of your server in the Server field
If your media server requires a login you need to enter your credentials in the User and Password fields
Click on Save, and then click on Connect
Above is an example of entering the IP address of the Samba server; Note that your IP address will be different that what is shown here
Browse to your files, and enjoy!
Keep that in mind that for the next time that you are opening the app, you need to go to the the menu tab and select Connect to Server, and click on your server