As mentioned, there are different types of stones with different issues. I have had a couple of bouts with the calcium type stones. They do seem to be hereditary. Some medications (topamax is high on the list) can increase likelihood of stones.
I have been seeing a urologist and a nephrologist. The nephrologist tells me that the biggest issue is to to take in plenty of water. He also has me taking potassium citrate and a diuretic with the idea that it will make the urine more acidic and move it through quicker, making the likelihood of stones decrease.
From what I understand, cranberry is more for urinary tract infections and does not help stones, although the fluid is good. I can't imagine it will hurt. Some promote decreasing high oxalate foods including rhubarb, spinach, various leafy greens, although my doctor says that he believes that keeping fluid intake high helps most. Years ago my father had them. He are a point of drinking lots of water and never had them again.