I saved a somewhat fuzzy site map last year - this should at least give you an idea of the normal layout, although someone else might have a better version without the orange text boxes!
The two biggest stages (main stage plus In The Dock) alternate performance times, so there's never an issue with sound bleed between those two. Other stages are a bit further down the site towards the science/workshops area, might get more sound bleed down that end I guess but it's never been something I've massively noticed.
Word of warning: the silent disco that runs around midnight in the In The Dock tent ends up pretty loud because everyone sings along, so you'll definitely hear them if you're camped round the back of that tent! The site gets pretty quiet at night in general though, there's not much going on once the main stage headliner finishes.
It's a compact and very walkable site, won't take you too long to get from one stage to another unless there's some serious mud.
