you can either use wget to download the webpage or use Firefox Ctrl+S (Save As) Firefox_Save_Webpage_As_Html_For_Offline_Reading

wget; # download webpage

# become root
sudo bash;
# or

apt-get update; apt-get install lynx;

lynx -dump "website.html" | awk '/http/{print $2}'| grep -E 'mp3|MP3' > LinkList.txt;

# extract all links that have mp3 or MP3 in it

# FROGET ABOUT: sed -n 's/.*href="\([^"]*\).*/\1/p' website.html IT WILL NOT EXTRACT ALL LINKS!!!

wget -i LinkList.txt; # download all links in that list to the current directory