Headphone jack problem

Ok this is how it went. I was using my ipod (touch 2g) listening to a podcast through the headphones when all of the sudden the sound gets really low. Thinking I must have accidentally hit it I turn it up all the way still getting hardly any sound. I then tried with some music and got a really weird result. I could hear louder sounds like the music (garbled slightly) but no words.

So then i tried to play that same song through the built in speaker and it worked fine. Thinking it was the headphones I threw them away. But then got another pair of non-apple branded ones and it still did the same thing.

I reset the ipod (didn't work) and restored it (still didn't work) So I'm going to make an appointment at the genuis bar but don't think they will believe me because I don't have the headphones that came with it. Do you think they will still fix/replace it? And if anybody else has had a headphone problem could you tell me some of your solutions?