pdf2kindle A command-line tool for uploading academic papers to a kindle. Automatically processes and emails the papers.
fpick A curses-based utility for manually selecting a set of files from a directory. The selection is output as an rsync exclude file, so it is useful for copying sub-sets of files. The readme in the repository has more information.
My mpd File-Access patch (v0.19, v0.17-v0.18) that makes it so you can queue file://* urls as long as you have read permission on the file. Normally MPD tries to intuit what user you are which I believe may only work when you actually log-in.