I would recommend Audacity. It's a simple but powerful tool, and 100% free open source.
http://audacity.sourceforge.net/You can also download some sound effects from various sites. (Google is your friend).
I would also recommend you get some recording equipment. It doesn't have to be high quality stuff, but as long as the music coming out of it is the one that you want

.
Cheers,
Anich