Thanks Scoundrel. I tried to locate this firefox add-on through the FF Add-On interface but it said that it was not found. However, a google search showed this page.http://mirror.kr.freebsd.org/mozilla.org/addons/11869/
These methods are sure easier that my "old" way, which was to use "http ripper" to rip to flv, and then "sound konvertor" to convert to mp3.
Desktop: AMD 3.6ghz X4, Gigabyte MB, 8GB ram, Multiple PCLOS's, 188.8.131.52-pclos3.pae.bfs
Server: Intel 3.4ghz X2, 4GB RAM, SATA, gnome2, *.pae.bfs, Headless, Servers: LAMP, FTP, Samba, Print, PXE, BT
HTPC: Phenom II X4 2.8ghz, 4GB Ram, 1TB SATA, PCLinuxOS-KDE, NVIDIA N220GT HDMI, *.pae.bfs