How to transfer song to Shareaza?

Hello.
I just downloaded shareaza to download songs and burn a few cds.

I have a couple songs in a music folder on my desktop that are MPEG 4 Audio Files. How do I transfer these onto shareaza? Do i need to convert them? If so how?

Also the 3 songs that i just started to download say “queued” and have said that for the past 20 minutes now. Will they download? Thanks