The option to delete files from the disk in the playlist is back but it's disabled by default (you can enable it in Preferences -> Playlist -> Misc).
On Linux SMPlayer now uses a different web server, included in the packages, to serve files for Chromecast. If you installed the package webfs you can uninstall it now since SMPlayer won't use it anymore.
New translation: Norwegian Bokmål.
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Learn interesting things about SMPlayer in our blog.