Well, music is a personal decision between you and God. No one else can tell you what you should or shouldn't do. But personally i wouldn't. I don't listen to a lot of secular music. I mostly have old stuff i pull out once in a while. But not on a regular basis. And some things i've decided i shouldn't listen to anymore. There is a lot of new stuff i'd like to listen to but because of the themes of the lyrics and visuals i won't.
I used to allow myself to listen to a lot more secular music, but i came to the realization it was bringing me down. I could feel a difference in how i felt from listening to some things. Some of it affected me very quickly. Some things i can listen to for a bit before it gets to me, but it all pretty much will bring me down eventually. So i stick with things that are Christian, or at least Christian friendly. But what does your conscience say to you about listening to 'His Infernal Majesty' whose logo is a mix of heart and pentagram?