From looking at your site, I think you are more likely to get your account deleted for copyright issues than you are for queries/resource usage (though that could be a possibility). A “free upload site” that encourages members to upload mp3’s is bound to get someone’s attention sooner or later - and as the traffic/usage increases and loads the server, the DH admins will have to take a look.
When/if they see traffic moving copyrighted stuff around, you are likely to be toast. I sure wouldn’t be promoting it or drawing attention to it on the host’s own forums.
But then again, you could be lucky, so Rock On!