[web2py] how to download an audio file

[weheh]

I want to click on a link and have a jpeg or an mp3 file downloaded
from the server to my local machine as though I had done a right-mouse-
click and selected the "Save Link As ..." menu entry. In other words,
when I click on the link I want to get a popup asking where to save
the file. Any thoughts as to how to do this? My feeble attempts so far
have failed miserably. The file is stored on the server under C:/
web2py/applications/myapp/static/files/mytable.name/xy/<long filename>.