Rhubarb

Click on 'Task' in Options (top menu bar) and uncheck 'Play Sound'

That is a false positive (and a known issue). It only happens with some anti-virus apps but not with others

I think the highest number of LT seeds I've seen was just over a dozen. That's why I consider the 'ranking' system to just be a bit of fun.

Use the 'check for updates' under 'Help' in bitcomet and you will find out that there is NO update available and that 1.49 is the latest version. I can't say what is happening on the website but to me it's an error and 1.50 is still not released

Have you actually tried downloading it?

I would think that his problem was solved - 12 YEARS ago (in July 2006)

And that's what you're getting again - a false positive

You can exclude or 'white list' it in any anti-virus apps it doesn't get affected. Personally I wouldn't use Defender but a third party app instead. There are numerous free ones out there, some better than others. I would advise against Webroot though as this has been known to be overly aggressive (and does cause problems in things like Second Life.

Magnet links do take a bit longer to kick in as opposed to a .torrent file. That's perfectly normal.

'Magnet links' isn't a program. It's simply another way of initiating a download. It's used when there is a problem with downloading the actual .torrent file and is's shown by a yellow download mark instead of the green one. It may take a while before Bitcomet can actually initiate the transfer as it has to find trackers that match the hashtag of the file.

open the magnet on the web page and when prompted 'open with bitcomet'

There's no column specifically for showing LT seeding, however, if you look at the 'peers' column at the bottom it does show the data rates from all sources, including emule and LT seeds (if there are any)

Presumably whoever runs that site has blocked any video 'grabbing'.

Bitcomet handles magnet files with no problem - why ask about a different program?

If you close down using the software, Bitcomet will save the data for incomplete files. However if you just turn off the power at the socket then it won't. Also, if you suspect that the file may be corrupted, stop the download, do a manual hash check on the file and re-start it