MB Left Speaker not working - Return it?

I bought my MacBook a couple of weeks ago from Amazon. Sound was only coming from the right speaker, so I assumed Apple was being cheap and made it mono. I rarely listen to my laptop speakers so I thought no big deal. Today I realized there are two speakers but the left one doesn't work at all.

The question is if I can return it to Amazon or will they make me go through the Applecare hassle. I really dislike having to get a new device serviced; if it was broken when I bought it or it broke within the first month, I prefer to return it.

Does anyone know Amazon's policy on this? Also, has anyone seen this problem before? Thanks!

Mark

I checked the appropriate settings in Preferences and Utilities. The odd thing is when I play a sound in the left speaker only, I hear a muffled sound coming from inside the laptop near the right speaker. I highly doubt the left speaker could have been dislodged to the opposite side of the laptop, but that's almost what it sounds like.

Mark

Yup, I'm running all the latest. I called Apple Care and they walked me through the expected steps, then also had me throw out some preference files, but all to no avail. He said it seems like a hardware problem and wanted me to send it in for repair.

I'm backing up my hard drive and reloading the OS. If that doesn't fix it, it's going back to Amazon. According to their policy, "You may return any computer that is "dead on arrival," that arrives in damaged condition, or that is still in unopened boxes for a full refund within 30 days of purchase."

Mark