What are the options for streaming music from PC to phone?
Generally, Galaxy devices have AllShare app which is DLNA certified software. If your device doesn't have AllShare, install Skifta.

Now, all you need is a DLNA certified media streaming server on PC. Fortunately, Windows Media Player 11 on Windows XP has this capability. So, you don't need extra software.
 

Make sure your music collection is in WMP library.

You don't need any extra-terrestrial configurations as DLNA certified products feature UPnP (Universal Plug and Play). Just make sure apps (or, its services) are open &amp; are connected to same network (LAN/WLAN).

Its the best way for streaming media because its UPnP. It was designed to get rid of complexities of traditional media streaming solutions. And, it supports pictures and videos too.