R.java class in Android

view story

http://stackoverflow.com – I have one serious problem. I was watching some tutorials on YouTube about android programming and after one problems with R.java class appeared. After compiling my project R.java class gets deleted. This problem started when I try to add some sounds, but then I have deleted them, strange is that that I never used them in any .xml or other class or file. And yes, I tried to clean my project like 1000 times... In worst scenario I could rewrite everything, but I would love to know how to solve it. Here is what it looks like http://postimg.org/image/l7iyf1gwr/ (HowTos)