last line was a type, it probably was meant to be
cp /downloads/alsa-* ./
do remember that the /downloads/ directory is just what ever directory you put the alsa files you downloaded into.
if they're in your home folder, you could type
the tilde (~) always means "my home directory" for whatever user you are logged in as.
if i copied the files to my Gnome desktop, i'd have to type in
cp ~/Desktop/alsa-* ./
so there you go, give it a shot!