Iam very new to Linux and know very little about it. I ve installed Fedora but have a problem with the sound. The soundcard was detected and all sound effects work well. But when I try to play an audio cd, I have a problem. The cd player pops up, and it seems it is working but no sound from the speakers or headphones. However, when I plug the headphones to the cd-rom I get the sound from there, so it is not malfunctioning.
Can anyone in simple terms explain to me how to fix this seemingly trivial problem (but not for me!).

Thank you.