What can you tell me about this? Also i have one specific q.When i listen cd on my pc i can feel that it is very very hot after that.And when i listen in cd player it is not hot at all.Can this heating in pc cd-rom damage my cds.
See for instance http://www.osta.org/technology/cdqa12.htm
As for temperature, the orange book suggests that you can get disc degradation above 55 degrees celsius (recommended values are are from15 to 35). In case of high heat you can also sometimes see temporary color changes on the dye, which is definitely a bad sign.