If you want an easy method, then download
Audacity; it's a free and easy to use audio editing software. It will take a while doing it that way, but you will be able to do it. There is a far quicker method, but it'll take a little time to set up and won't be as straightforward to use.
If you're looking for an automatic way of cutting out music, then you're out of luck at the moment as artificial neural networks aren't currently up to the task of distinguishing between music being played to be heard as music and music being played behind speech or as an example.