Q:

Aren't sounds made by sinusoidal plane vibrations sound-lasers or SASERs? 

I read the first sound laser (or SASER) was made in 2010 here. 
But if we're talking about the state of the phonons emitted then we could say that any sound created by a planar vibration has a unique wave vector $\vec{k}$ and its phonons are spatially coherent.   

A:

The papers described in the report you've linked to demonstrate examples of sound amplification by spontaneous emission. 
This is independent of the characteristics of the waves that those source produce.  As it happens, for sound (as opposed to light) it is relatively easy to create waves that have high spatial coherence and well-defined wave vectors $\vec k$ without using amplification by spontaneous emission.  
However, that does not mean that sound with those characteristics, produced via other means, should also be called a 'saser'.  This should be obvious -- it's no different to the fact that octopuses shouldn't be called spiders just because they also have eight legs.  If it isn't, then maybe it's good to spend some time understanding the fundamentals of how lasers work.