to be on the save site:
1. setup your own fileupload script, I like jQuery File Upload Plugin
2. let the script return a div-window including the link to the file
3. let the user copy this link into their posts.
Otherwise you can use free CKeditor scripts, such as: FileManager in CKEditor
or the commercial version: http://cksource.com/ckfinder
Welcome to the Q&A site for Question2Answer.
If you have a question about Q2A, please ask here, in English.
To report a bug, please create a new issue on Github or ask a question here with the bug tag.
If you just want to try Q2A, please use the demo site.