Now, this is a basic method used by most users that want to know how to play music through mic and talk. The one that is existent is actually occupied by your cable input. This is due to the fact that most of the audio sources do not have two outputs. However, when using this method, users might be unable to head sounds that they transmit depending on the source of audio that has been used. Now, keep in mind that this configurable source of audio could be anything, but in your case, the source can be the soundboard that makes use of the hotkeys in order to trigger your sounds.
So, if you are wondering how to play sounds through mic, this particular method allows you a scope to select the specific source of audio that you would like to play via the system’s virtual microphone. However, it is a bit limited as opposed to the previous option.