Gentlemen I'm new to this hobby I'm a modeler and graphic artist and I have tons of questions please be patient with me:-)

1.)First I'll give it a try,anytime soon my HO bachmann union pacific #4432 w/ smoke will arrive,product description says its DCC Compatibility: DCC Compatible - No socket or plug
     Q: can i put sounds on this train?
2.)Tracks
     Q: even if i have a bachmann train can i use a different brand of tracks?
     Q: if my track is the ez tracks is it possible to connect other brand of tracks?

hope you can help me to this new found hobby..appreciate it!