Can someone explain to me what Software Syncing does?

Noob here, I have been reading on how to do this and I think I understand that but I will have to purchase some things to do it so I wanted to ask beforehand about its function. What are the main functions of this? I assume when recording the song into the computer it keeps everything nice and neat so you dont have to go back and chop off the dead noise and helps with the timing of sounds that dont start at the beginning.

From what I understand it gives control of the MPC to the software, so if you press play on the software the mpc will begin playing. What I was wondering about is can you still record on the MPC while it is hooked up like this?

Or do you have to push record/start in the software to get the MPC to record?

(also, is it possible to Sync with Acid Pro? I know this probably isnt the best program but I am very familiar with it from recording vocals for a long time so if its possible Id like to use this)

also, is this setup right if I want to Sync my MPC with my MOTIF with the PC as the Master?

MOTIF MIDI OUT > MPC MIDI IN 2
MPC MIDI OUT > MOTIF MIDI IN

PC MIDI OUT > MPC MIDI IN 1

Check this link out...http://www.tweakheadz.com/how_to_get_started_with_midi.html

Plus I'd ditch acid for something else if it were left up to me. I'm not going to explain why, but for one, it's so consumerish if you catch my drift. It's not a bad program, it's just not one of the "main stream-go to" programs that's widely used in the recording industry.

What if someone with a program such as cubase, logic, pt (pro tools), dp (digital performer), sonar & etc. wanted to send you midi and audio files to colab on, or needed you to send them tracks to transfer to pt or whatever for mastering?

What I'm getting at is, you can do what you want, but you'll find out there's a price you'll pay for being somewhat incompatible.

Compatibility means a lot these days. But you do have the choice of being on an island by yourself too. Plus if you're working with multiple pieces of gear, it would be wise to invest in a 2x2 or 2x4 midi interface to eleminate the midi routing headaches.

But soak up as much info from tweakheadz that you can, it'll help you in the long run.

Great link, thanks!

It's nice to have some noob-friendly reading