Reply to Numark Mixtrack PRO - Traktor 2 remapping

Hi guys,

I am completely new to remapping, and would appreciate a starting point for Mixtrack PRO. At the moment, I would like to do the following changes (I will use the EQ kill buttons to assign new functionality):

1. A key to start the song from the beginning (not from the cue point)
2. A key and a jog (eg. cue mix) to enable/disable Traktor's filter (the jog above the FX buttons).
3. A key to preview a song without loading it.

At the moment I don't understand how the whole thing works. So I would appreciate if someone could provide an example (eg. for the following functions) and as mentioned, a complete mapping tutorial for mixtrack.

Thank you