Comment 11 for bug 304024

I see that the license issue with the music for Word War vi has to do with CC BY SA 2.0 vs. CC BY SA 3.0.

I'm trying to figure out what the salient difference is between these two so
I can explain it to the other two copyright holders of this music besides myself
when I ask them if it's alright to change the license to CC BY SA 3.0.  I strongly
suspect that getting this changed will not be a problem, so long as I can clearly
explain the difference.  So, two questions:

1) If I am able to change the license from CC BY SA 2.0 to CC BY SA 3.0, that should
be sufficient to get the music back in, right?

2) Do you know of a succinct description of the salient differences between these two
licenses that I can use to inform the other two guys I need to convince to change the
license?  So far I haven't found anything very intelligible.

Thanks, and hoping to get this resolved as IMO the game loses a lot without the music.

-- steve