Yeh, I relate. I have things like that going on in my head on a regular day-to-day basis, and have done since I was in my early teens, if not before then; I'm 26, now.

You do need to get help, otherwise it will keep getting worse, and you will continue to find it harder to cope with, so get yourself some help ASAP. Sure, it's weird, but so what? As you've probably heard before, doctors get told so much crazy stuff that to them it's the norm; they understand. I would definitely say that you're ticking all the boxes for OCD, because, since I'm no doctor, my word isn't fact, but I do have more than enough experience in that field, so take from that as you will, but please do get some help for this.

Also, trust me, you are not alone.

I see I'm the only poster on this thread so far with OCD, so maybe if it helps, check out this thread of mine that I have so far managed to keep updated, and you'll see just how not alone you are:

http://forums.psychcentral.com/showthread.php?t=264448

Intrusive thoughts take center stage with me, so I relate to that, without a doubt. I think the most comforting thing for you, is what was for me amazing, and that's to know that you're not alone, and I cannot stress this enough! I went my whole life (thus far :P) unrecognised and untreated with this crap, and it was like some horrible dark evil sinful secret and I felt like I was the only one with this, either that or I was evil and horrible and blah blah blah... turns out it's unfortunately common.

Hope I helped in some way, and I feel your pain, trust me! But you need to get yourself to someone and talk about this with them.. a professional. For me, it helped to talk to friends and family about it, piece by piece, over the years, but that takes too long.. :P ..so if you can make that push to see a quack, then it'll be worth it.

BTW, you may want to call a technician to sort that brain stereo of yours, as it sounds broken! Actually, what song is it that plays? Can you recall a particular event in which you heard that song? I wouldn't be overly surprised if that song is stuck in your head for a reason.

Sorry that I didn't spot and reply to this sooner - as you can see, I have 360 posts (or however much it'll be when you read it) and that's over 3 years. >.> I'm usually eager to chat but the stuff on this site is difficult for me, and I get very paranoid and conscious about it being on the site, for the public to see.. it's bad enough that I know some people that know I'm on this site.. so I kinda worry what people think.

Anywho! Send me a message if you like! PM thingy. I'm all eyes, as long as you know I don't use this site daily or anything, but I will reply whenever I'm on, if I can.

Now to send you some hugs, and thanks, because you've helped me feel that little bit less alone. :P