There are links to software like this on the Accompaniment & Style Software page at Synth Zone

You will of course have to use your soundcard in your PC for sound and the Juno 106 as a MIDI controller. The Juno 106 came before multitimbral synths of course so can't be the sound source. But your PC sound card should be able to provide GM sounds for instrument playback. And the Juno 106 will be fine for MIDI control.