I would worry more about copyright violation than the technical aspect of posting the file. Typically - you find a web host that will store your files, and post a link here. Most hosts though will cancel your service or delete your copyrighted files if they find them. You takes your chances. It would be "safer" to email it to those who contact you for the file.
What kind of materials can I post?
There will be times when you want to share something you found on the Internet with your fellow MiceChatters. Sharing is indeed caring. But, please be careful - there may be hurdles for you to jump. When you post information, an image, video or audio file from another source, make sure you are not posting content that is copyrighted. Such materials being shared and distributed without the consent of the person who owns the copyrights to the item in question is not allowed. This includes pictures from other websites. If you wish to discuss a picture, post a link to the site's page that the picture is on, and not the picture itself. Always make sure that you credit the original source of information which is not your own. Finally, check the terms of the site you found the information on - they will usually explain what can and can't be shared and how it should be cited.
MiceChat reserves the right to delete content (or credit it for you), that we feel violates general copyright principles. Members are reminded to use the "Report Post" button to alert us to possible copy right infringement.
Even if the file itself can't be downloaded, just having it "listed" for listening can set you up for all kinds of legal hassles... esp. if the content it Disney.