Can I use my iPhone 3GS as an iPod? No SIM card?

I bought an iPhone 3GS which is locked to bell. There's no SIM in the phone either. I downloaded iTunes and Quicktime. I also put all my music into iTunes. But everytime I plug in my iPhone, it syncs contacts, calendar etc but no music. Would my music sync in my iPhone if I unlocked it? What can you do with an unlocked iPhone with no SIM?

A iphone is basically like a ipod but you can call and text lol.of course

You can use it just like you said, as an iPod. An iPhone without a SIM card can basically do everything except make phone calls and connect to the web over a 3G network.

Yes you can.