I Can't drop file when I try I have "Crossed circle" and when I import media I have "distorted .mp3 audio" (strange voice) and sometimes incorrect lenght - how to fix it? (files work on friend vegas, so it's not a problem with them)
As for MP3, mostly resetting Vegas Pro may work (hold ctrl+shift while starting the application), or uninstall reinstall.
Before resetting, can you share your log file called "fileio_x64.log" which can be found in C:\Users\<USERNAME>\AppData\Local\VEGAS Pro\17.0\fileio_x64.log ?
Thanks, @set, for the alert and prep work, and @Kacper-Majewski, for providing the FileIO log. I see from the log above that the mp3plug2.dll is not getting loaded - this is the plugin which handles MP3 files correctly, and in a normal situation, this line would show up:
INFO 2020-06-30 13:31:03 Loading cached reader|renderer plugin 'MP3 File Format' from path 'C:\Program Files\VEGAS\VEGAS Pro 17.0\FileIO Plug-Ins\mp3plug2\mp3plug2.dll'
Can you try resetting your preferences and see if the MP3 file gets loaded correctly? Please provide an updated FileIO log in case it works.