Hi,
Is there a feature on any website that will play guitar tabs so you can compare. For instance, I have a song "aint no sunshine" that I am trying to play by using tabs. However, their are some parts I'm not sure about but would like to hear those tabs played. Anybody know of a site that offers this?

In my opinion the best way it will be to download the GUITAR PRO 5 with RSE and it's great

What is it? What does it do?

an alternative would be to download power-tab software. It's essentially the same thing, but it's free. Guitar Pro has a demo version but in order to get full use, you have to buy it. There aren't as many Power Tab tabs to download but if you find them, the software does basically the same thing for free. But GP5 has more features. I thought it was worth the money.

guitar pro is awesome! you can even tab out your own songs, but that can ge a little complicated when trying to get timing right. these tab programs basically just take a midi song and convert the tracks to guitar tabs and allows you to follow along while it's playing.
I would suggest getting limewire or frostwire and just download a zipped version with a crack and get it for free! but i didn't tell you that...
power tab is also very good.