Plug your JUNO-D into your audio interface. The interface allows you to connect all your peripherals to your computer simultaneously through one hardware device. Insert your MIDI cable into the "MIDI-Out" port on your JUNO-D, and into the "MIDI In" port on your interface.
Plug your audio cables into the "L" and "R" ports on the back your JUNO-D, beneath the word "Output." Plug the opposite end of each cable into an available "Line-In" port on the front of your interface.
Install your audio interface driver. In order for your computer to communicate with your interface, you will need to install the appropriate driver. Locate the CD-ROM included with your audio interface, insert it into your CD/DVD-ROM drive and double-click the installer icon. When installation completes, you can eject the CD.
Plug your audio interface into your computer. If using a FireWire interface, plug the attached FireWire cable into a corresponding port on your PC. If using a USB interface, plug the attached USB cable into a corresponding port on your PC.
Open Sonar Home Studio on your computer. If you have not yet installed the software, insert the installer disc into your CD/DVD-ROM drive and double-click the installer icon. If you already have the software installed, double-click the icon to open it.
Create a new audio track. Right-click your mouse anywhere on the main browser and select the "Insert Audio Track" option from the pop-up menu. Click the "Input" menu beneath the track heading on the left side of your screen and select your audio interface as your input device. Begin playing notes on your JUNO-D and they will transmit to your computer.
Create a new MIDI track. While audio tracks let you record directly from your JUNO-D, MIDI tracks let you record using Sonar's built-in virtual instruments. Right-click your mouse anywhere on the main browser and select the "Insert MIDI Track" option from the pop-up menu. Click the "Input" menu beneath the track heading on the left side of your screen and select your audio interface as your input device. Double-click the track heading and select a virtual instrument from Sonar's music library.
Press the red "Record" button at the top of your screen to begin recording. Press the black "Stop" button when you finish.