Well that makes it more complicated, because VGA is a video-only interface so you must get audio from Toslink or headphone jack.
Am not familiar with scart that's on you.
From where I sit, ideally you can go VGA to Component converter, because it actually comes with separate audio cables, assuming TV has this particular interface. It's a 5-cables thing.
What's your budget for this project anyway before we rack our brains out maybe for nothing?