Sound nodes have been redesigned visually and had some inputs renamed but functionally it is still very similar.
The Single and Equalizer sound types are called Average and Spectrum now. These names are used more often in other software as well.
Also the output of the Evaluate Sound node is called Volume/Volumes now depending on which sound type is selected.
Many common sound animations can be achieved using the new sound falloff.
Of course the older, more flexible approach, is still available.
Often it is useful to enable the AV Sync option in the timeline.