My son has a Samsung Galaxy Y (Android 2.5?) , while I have an HTC Desire X on Android 4.0. On my Android 4 device, when I click on Music, I am given an option to find "Media Servers". If I do that while connected to my home Wifi network, I can see my networked PCs and play the music they hold on my phone. My son would really like to do the same on his Galaxy Y. Has anyone come across a (preferably free) app that offers this?