More newbie questions

[Dragonlord]

Hi all,

Since my original newbie questions thread was such a success, I figured I'd draw on your collective knowledge again. This forum is great !
Three new questions came up:

1: The "sweep mines" command. When would you ever need this? I a minesweeper enters a minefield, one of two things happens: you sweep all mines and live, or there are more mines than you can sweep and you die. Why would you want an explicit re-sweep?

2: Trading comm channels: can this ever work against the AI? I can not ask them for comm channels of neighbors of theirs that I havent met yet, since my race doesnt know yet that those neighbors exist. Once I meet the neighbors, of course I immediately have the comm channel. So this feature seems useless..maybe not in multiplayer? Will its how you a list of all the comm channels of all players in the game, even the ones you have not met yet?

3: CD music: I hear I should have this. I dont. I now have the CD in the drive, start the game, but no background music. I did not touch the default setting in settings.txt that says CD music = True. When I launch SE4 it does not even check for the presence of a CD... what am I doing wrong?

Thanks in advance,

Dragonlord