My band is donating money from our demo tracks (which were originally free until we ran out of bc downloads) to the cause - http://theglowingstars.bandcamp.com - if anyone else has material that's free right now, I suggest changing it to "name your price" and offering the resultant money to the Red Cross (or such).
Said band or myself would gladly come up with a track to add to a comp as well! Hope it happens!