The thing with a domain such FreeMp3Downloads.com is that it breaks all the rules 4 words, long, even has a number in it except one over 26000 searches for "free mp3 downloads" a day. That puts it among the 200 most searched terms on the net.
As for .ogg domains I agree with you today little or no value (.ogg is wide open now) and it will take time, but if .ogg does take off .ogg domains will become very valuable, and I find the potential risk/return over say a five year period is very attractive.
So I plan to hang on for a while to my
oggdownloads.com
oggmusic.com
freeogg.com
oggmidi.com
oggcodec.com
in addition to freeoggdownloads.com
And by the way the top bid for "free mp3 downloads" on Overture is $0.27 US a click so this keyword does have value.