Simple file server that works for MS Windows users as well - ideas?

[Chris Green]

I often seem to need to 'send' files to people, sometimes attaching to
an E-Mail works but this very often hits file size limitations.

Currently I'm trying to send an audio file to someone in Australia who
doesn't seem all that computer aware, so what choices do I have?

I have a Linux server out on the public internet where I can put the
file, what sort of thing can I run there to make it easy for them to
download?  I suppose I could set up an FTP server but are there any
easier ways?

-- 
Chris Green