You have to have a USB OTG cable ( $10 @ Amazon ), the USB audio driver, and a music player that supports the driver. This cable just turns your S4 USB port into a USB Host port. In addition to being able to do USB audio, you can also use the cable to connect external hard drives, keyboards, mice, etc.
*** This is IF you want to pass 24-bit audio to a DAC that is connected to your receiver. ***
I don't have an S4, but I have relatives that do. My device has a native USB Host built in, so I just need the driver and software.
If you just want to STREAM your music to the receiver, then all you should need is the regular USB cable connected to the receiver and the AirAudio app from GooglePlay store. It is free, so it wouldn't hurt to install it on your phone and give it a go.
In the good old days before I was fully net-connected, I used to use NET/USB to access music from external USB devices. Now I just send everything to the Oppo BD player since that allows me to plug in external drives and access media on my computer systems as well.
Denon AVR X7200WA, Emotiva XPR-5, Emotiva XPA-7, Sony XBR 75" 850C, Oppo BDP-103D, Roku 4.
DefTech BP7000SC (L/R), CLR3000 (C), SM55 (FH), UIW BPZ/A (SB), UIW 75 (TM).
JBL L7 (Sur), EoSone RSR 350 (RH).
PC 2.1 setup. Emotiva Stealth 6, SVS SB2000 sub, Emotiva DC-1 DAC.
Last edited by jevans64; 08-14-2014 at 09:30 PM.