D.G.
Hi D.,
Yes, we use a sound machine every nap and at bedtime to drown out outside noise and to set the scene for sleep. We like the "rain" sound because it's steady and nice to listen to. Also, if my 2 year old gets up 1 night and i go in, i notice she might get up the next night also. If it's 1 night and it sounds serious I do go in to her, but if it is happening again the next night and the next night I try to not go in. If she thinks she can see Mommy in the middle of the night then she would like that. If it doesn't continue to work for her night after night then she will stop trying.
Good luck!
D.