Somehow, I’m not really sure how, we got on the topic of listening to shows from outside when you either like the band but not enough to actually spring for a ticket, or just happen to live close enough to the venue that you can hear the music.
When I was a kid I lived in Columbia, Maryland, about three miles from the Merriweather Post Pavilion. Hearing concerts from my house didn’t happen often, but it did happen occasionally. More often I would go to the symphony woods and listen outside the fence. As a teen I had a buddy who worked there as a vendor and I regularly got in free. That was cool. If you can, find yourself a friend on the staff of a venue; it can be highly rewarding.
Anyway I couldn’t find a term for listening outside, so I coined one: Freeloading the venue. I might come up with something better.