ExSim Guys I don't know which carrier you fly with but as far as I am aware and concerned there is no problem with using a CD player inflight. The only restrictions on using electronic goods are during take-off and landing. Like you said people use their CD Rom Drives in their laptops all the time and this isnt a problem. The problem as i said occurs when they use their mobile phones connected to the laptops. Mobile phones are NEVER allowed to be used for the entire time that the engines are switched on!!! Hope this answers your query.
