To install the Remote app, just search for ‘Remote’ in the App Store and download and install as normal. We aren’t going to cover everything it can do here, so for now we’ll just illustrate how to set the app up to control your Mac’s iTunes library and you can explore the rest of the app on your own.
1: Scan the network
Launch the Remote app and hit the Choose a Library button to begin scanning your Wi-Fi network for iTunes libraries on available computers.
2: Choose a library
From the following page, select the Add an iTunes Library option by tapping the button. Home Sharing will find other devices with it turned on.
3: Get passcode
A four-digit passcode is generated and displayed on your iPhone’s screen. This will be used to link your iPhone to the computer that you intend to control.
4: Choose device
On the computer you want to control, open iTunes and select ‘iPhone’ from the devices list on the library panel on the left-hand side.