If I felt abandoned by TV providers who can't get their act together to offer a reasonable viewing option in my area, I might check out sport surge dot net. There are always dozens of live streams for every game. Just be sure to install a good ad blocker extension and always close popups. I hear it works great.
And for replaying completed games, the top Google result for "NBA Replay" does exactly what its name implies.
And for replaying completed games, the top Google result for "NBA Replay" does exactly what its name implies.