Download metadata

Some files may be shared in the various protocols with
the same name but different contents.

The average user will not want to keep track of what
version of the file that they are downloading, and
resuming a file with the same name but different
contents can only lead to problems.

For each downloading file, some metadata should be
stored about that download, such as file name and the
current sources for the partial download.

I would suggest that this metadata be kept either in
name-value pairs, e.g.

FILESIZE=3408976
DOWNLOADSOURCE=Mr Bubbles
DOWNLOADSOURCE=Ms Chainsaw

or, in an xml format, e.g.

<download>
<size>3408976</size>
<downloadsource>Mr Bubbles</downloadsource>
<downloadsource>Ms Chainsaw</downloadsource>
</download>

Associating these with the download files could be done
in a number of ways - make the metadata files have
similar name, e.g.

filename is Scryed -05.avi
metadata file is Scryed -05.avi.met

Or even just have one metadata file somewhere with
filenames included.