The Ancients had beaming, this has been shown.
First of all, the Ancients invented the ring transporters.
Second of all we found out that the transporter rooms in Atlantis actually beam you to locations, and the sound is similar to the ring transporters.
Thirdly we saw that in the episode: "Avalon Part 1" beginning of SG-1 Season 9, when they are in the cavern finding the Ancient treasures, the treasures are "beamed" in with a yellow colored beaming light, it is the same type of Asgard beaming, but yellow instead of white, and since this was an Ancient thing, that there is your Ancient beaming.
Here is more info on it plus a screen grab of the yellow beams -
http://stargate.wikia.com/wiki/Ancient_beam_transporter
So yes, the Ancients had beaming.
It seems the Stargate was still a faster way of traveling planet to planet, and this is the method the Ancients preferred.