I am setting up an in car entertainment system and need a little advice....I have redmax's lcd/dvd combo on the way, and plan on using a HU adapter to allow me to use my stock bose speakers....however, I am not sure what features i need in my HU to set all of this up....do I need more than 3 preamp outputs? how about video inputs or aux inputs? What are all of these inputs for!? Any suggestions on a cheap cd/mp3 player that has enough connectors to use redmax's dvd player, lcd screen as well as the hu adapter for the speakers? Any help would be greatly appreciated!