A CD or DVD player (not a home theater in a box) doesn't have amplifiers in it so you can't connect passive speakers like the ones you have to it without adding an amp.
If you have a headphone jack that won't power most speakers beyond a very low volume so you would need an amplifier here too.
If by radio you mean an old school table radio you can connect the bare wires to the speaker wire that connect the internal speaker. Best to disconnect the internal speaker
In no case would a USB do you any good except to blow things up.