Now it's possible to play youtube videos in smplayer.
Just go to Open -> Url and enter the link of the youtube page (or drag it from the web browser to the smplayer window).
You can select the preferred quality of the youtube videos in Preferences -> Performance. mp4 or webm formats are recommended. If a video is not available at your desired quality, another one will be automatically chosen.
There's also now a Favorites menu (still under development) where you can add your favorite files. You can also add youtube videos, just select the option "Add current media".
Please, test and report problems.https://sourceforge.net/apps/mediawiki/ ... e_releases