Notes about the QIN file extension:
To open this file type, a required software must be installed. Without it you only see a Windows message "The following file cannot be opened
" (Windows 7) or "How do you want to open this file?
" (Windows 10) if you double-click the file. There click on "More apps"
and choose a suitable software to view such files on your PC or from email attachments.
The QIN file type is primarily associated with 'Quinnsoft MP3 Player' by Quinnsoft. Quinnsoft MP3 Player has basic MP3-playing functions, with an added bonus--you can rate songs on a 100-point scale, and randomly generate a playlist that favors your higher rated songs. The RATINGS.QIN file is the music library; BOOKMARKS.QIN is the bookmarks file.