help/suggestions needed with wget

Hi

I'm thinking of using the following command to download some music from websites I visit (designated in the mp3blogs.txt file):

wget -r -l1 -H -t1 -nd -N -np -A.mp3 -erobots=off -i ~/mp3blogs.txt -P ~/Music/WGet

My only question is, is there ANY way to either download files that have been posted ONLY after a certain date (like today) or only download a certain number of files from each site in my txt file?

I know that the -N timestamp will check the files I've downloaded and only download new ones but as far as starting out, I don't want to download ALL the files some sites have available dating back to what could be years. That's why I was wondering about a solution as described above.

I know curl has a -z command that some people say might work but I'm more fond of wget.