Hello, after showing the playback, click on the video with the right button and save as.

Estimado cliente:
Para ofrecerle ayuda de manera más eficaz, necesitamos disponer de los siguientes datos.
Por favor, copie y envíenos la información especificada aquí: http://es.savefrom.net/user.php?info=1

Hello! Our help will be more effective, if you copy and send us info about your browser and the Savefrom.Net extension:
http://en.savefrom.net/user.php?info=1
We'd also need some links you can't download (to test them).
For the better understanding it'll be great to see a screenshot with the error.
We are waiting for your reply, and thank you for contacting us Savefrom.net Team!

Hello, in order to download MP3 from Youtube you need to install our program Ummy Video Downloader,
Also with the help of it you can download videos in high quality with sound: https://videodownloader.ummy.net

Hello, in order to help you better I need the following information.
Please, send me the information listed here: http://en.savefrom.net/user.php?info=1

Hello, we’d like to help you, but we will need some info about your browser and the installed extension first.
Please, go here http://en.savefrom.net/user.php?info=1,
copy the details that you see and send them back to us.
Please also send us some video links that you can’t download.

Do you download via the extension SaveFrom.net Helper or the website SaveFrom.net?
Thank you for contacting Savefrom.Net support !

Hello, we are working to fix this inconvenience.
This problem will be solved in the new release.
Thank you for using Savefrom.Net!

Hello, please give us more details.

Hello, thank you for contacting support in Savefrom.Net

This bug is known to us, we will try to fix in the nearby future.

Hello, the error is corrected in the next release of the expansion will be all right.

The release of the next week.