Linux CLI help request

[Timothy]

Peter S Kirk: What I want to do is download the .flv with subtitles ... I would 
be grateful if some of you clever chaps provide some CLI commands to experiment 
with.

you can use something like:
get_iplayer --raw --subtitles --get "<query>"
where <query> is something you want to search for. Otherwise, if you're more 
comfortable with program IDs, use:
get_iplayer --raw --subtitles --pid <eightAlphaNumeric Characters>
where <eightAlphaNumeric Characters> is the program ID. You might also want to 
try:
get_iplayer --help
 for more commands. I do not know anything about tagging Mp4 or (if possible) 
Flv files, so I'm no help there.

There's a wiki manual found here:
https://github.com/dinkypumpkin/get_iplayer/wiki/documentation

Timothy