Dear people of this forum, i need your help.
I use LibreOffice Impress. When i add an audiofile to my presentation everything works fine and it plays the file.
But when i send the presentation to a friend, the audiofile is not in the presentation.
Now i checked if the impress file gets bigger after i added the audio, and it does not.
It seems like the audio is only linked to my file on the pc but i want it in the presentation.
Can you help me?
Thank you very much.
When you insert audio or video files using the Insert menu → audio or video… ensure the link checkbox is unticked. This embeds the audio/video into the document rather than calling it from the filesystem.
If this answer helped you, please accept it by clicking the check mark 
to the left and, karma permitting, upvote it. That will help other people with the same question.
In case you need clarification, edit your question (not an answer) or comment the relevant answer.
Instructions say it supports m4a but when i try to use it i get not supported