I installed MP3Tag as a portable installation in Windows 10
In Windows Explorer, when I right click on a music file, I can select "open with" to open that file in MP3Tag.
But, when I select multiple music files and right click, I lack that function, and MP3Tag is not an "open in" option. So, there is no option to open these files in MP3Tag.
Thanks
See here: No explorer context menu integration
Isn't it characteristic for portable installations that they do not leave a trace on the current system which means that there are not entries for shell extensions? Just asking.
Thanks for the link to that thread. So, it is the portable installation that is the culprit. That thread mentioned that one option is to edit the Windows registry. I'd rather not do that as I don't know what I am doing. The other option it mentioned is to add MP3tag to the Sendto menu. I did that by following the link below. But, when I select multiple files to send to MP3Tag, only one file is send. Any idea how I can remedy this? Thanks.
https://www.howtogeek.com/howto/windows-vis...a-send-to-menu/
I think that "Open with" would be the correct function - "send to" IMHO describes a place that has some file system function.
I would D&D files from the Explorer windos into MP3tag.
What is D&D files? And how can I open them with MP3Tag when I am in Windows Explorer? Thanks.
Oh, sorry:
D&D=drag&drop
I would open the first file with the context menu in MP3tag.
Then select the others and drag&drop them to the MP3tag window while pressing the CTRL-key to add them to the already loaded files.
You can repeat the dragging and dropping for various files and/or complete folders.
That works. Thanks. I have a dual monitors setup. So, in the first monitor I use File Explore's context menu to send a file to MP3Tag. This opens MP3Tag in the second monitor. Then, I returned to the first monitor and grabbed the containing folder to drop it into the second monitor's MP3Tag's main window. MP3Tag then opened all of the files for editing.
Thanks again. Why is it so hard to open all of the files? I can't be the only user who has installed MP3Tag in portable. How do these other users manage? What if they don't have two screens? I just ripped 600 classical CDs - mostly small labels and historical performances, and am now hand tagging the missing tags. The way it's going, this can take weeks.
I am not sure what WE sends to MP3tag and whether it is clever enough to make some kind of playlist for handover.
Otherwise, as MP3tag can only be opened once, any further attempts to open the next instance of MP3tag will fail.
I have to be that vague as I never ticked the option to get the shell extension.
A portable "installation" is meant to be portable, i.e. installed on an USB-Stick and carried to use on several computers. Some people use a portable installation not to have any traces of it in the system and so don't have to uninstall but only to delete a folder after the decision to not use the software anymore.
Regarding this it does not make any sense to use a portable installation and then want to have the possibility to use a shell-extension for easier use, because such a shell extension always needs an entry in the system registry. It's just that Windows works like this.
So, if you don't want to install MP3Tag regularly with this feature or change the registry manually, just live with the consequences.
I personally can see no reason why not to install MP3Tag regularly, especially if you want this feature.
BTW: It is not necessary to have 2 screens to use drag&drop.
Windows is able to show more than 1 window on the screen.
Therefore it is called "Windows". 
As Liu, I'm also interested in this.
I use portable mp3tag on a google drive so I don't need to keep exporting my settings when I make new rules or edit discogs scripts.