I have created a powerpoint page and successfully uploaded an MP3 format narration, but it does not play in the preview. Has anyone else had this problem? More importantly, does anyone have a solution? Thanks!

I'm trying the Import Powerpoint and I get this error message: Cannot insert the value NULL into column 'ContentTypeID', table 'myUDUTU.dbo.Content'; column does not allow nulls. INSERT fails. The statement has been terminated.continue...  Also, how do I delete the Media box when I don't have media to upload. I only ...