/Android: How can I stream music over network to my Android phone?

I’ve searched quite a bit, and I simple can’t find what to do to simply stream music to my phone. Ive read about some emby addons some plex addons. I just want a free way to listen to my music on the go. I don’t want some extremely technical terminology, but I’m capable enough of some pretty intermediate tasks. Honestly, I’ve doing going at this for a really long time, and havent found a direct answer yet. I just want it to be up front, specific to my need. Ive messed around with quite a few of the settings, so whatever port forwarding or etc. I need to do, I’ve already either done it, or havent seen the option to. Also, what whould I need to do on my phone to get this to work too. PC hardware definitely isnt an issue, internet isnt an issue, and my phone is a Note 3. I plan on taking this task full out this weekend (12/3, 12/4), so answers before then would be nice.