I have friends who only listen to one genre of music. It gets boring listening to the same stuff over and over again. I have been listening to different music online for a couple of years now. I discovered a website called Bursalagu that features Indonesian and American music. You do not have to understand the language to appreciate music from other countries and cultures. I have listened to everything from Native American music to Russian music online.
It is easy to find music from pretty much every country on the Internet now. I think the first time I got interested in searching out music from other cultures was when I heard Mexican rap music at a Mexican restaurant.