Pouring urine over a rash

Q: I have a terrible rash on my private part and its very itchy and I loose a lot of sleep because at night it stings and burns. My question is the doctor asked me to pour my urine over my private part it will help heal the rash. Am I allowed to do this because it is umpure and it is najasat unclean so am I allowed to do this and afterwards should I do ghusl?

Disposing of a cassette

Q: I would like to know how does one dispose of a cassette properly that has Quraan and Naats on them? I have many and because new technology in cars doesn't allow to play cassettes any longer, what is the proper way to dispose of them bearing in mind any effects on environment.

Saying Ameen

Q: Is there any reward or is it sunnah to say sumaah ameen when one says ameen after an intention. Or is there any such saying and if yes what are the benefits?

The meaning of "Naushaad"

Q: My son became Hafiz ul Quraan. At his jalsa the moulana said that he will tell him the meaning of his name on the next big day (his wedding day) because if he told it then his father will fight with them. My son's name is Naushaad. Please tell us what is the meaning of his name.

Doubts about the purity of the glue used on wooden flooring

Q: I have a wooden flooring and I found out after it has been placed that those who placed it used a wood glue which could contain najais substances. Actually, I read the notice on the box but not the full list of components was given, instead it wrote '...and other selected chemicals.' I am not sure if it contains alcohol or something. Can I pray Salah on it?