Just out of curiosity, I poked around on YouTube to see whether any video tutorials existed that would allow listeners to get the actual sound of the augmented scale into their ears. I came across this excellent lesson by guitarist Geoff Stockton.
Geoff does a great job explaining the construction of this symmetrical scale and giving its basic application to major seventh and minor seventh chords. His video not only helps you understand the theory behind the augmented scale, but very importantly, gives you a superb introduction to how the scale sounds. Listen and absorb!