1. Open the YouTube video that you want to save the music from.
2. Click on the "Share" button below the video.
3. Select "Copy link" from the list of options.
4. Open a new tab in your web browser and go to a YouTube to MP3 converter website like: [ytmp3.cc](https://ytmp3.cc/).
5. Paste the YouTube video URL into the search bar and click "Convert".
6. Select the desired audio format and click "Download".
7. The MP3 file will be downloaded to your computer.
To insert the downloaded music into a PowerPoint presentation:
1. Open the PowerPoint presentation that you want to add the music to.
2. Click on the "Insert" tab in the top menu bar.
3. Select "Audio" from the drop-down menu and then choose "From File".
4. Select the MP3 file that you downloaded from YouTube.
5. The audio file will be inserted into the presentation.
6. You can then position and resize the audio icon in your slide.
7. Click on the "Playback" tab in the top menu and set the audio playback options as desired.
To upload the PowerPoint presentation to YouTube:
1. Click on the "File" tab in the top menu bar.
2. Select "Save As" from the drop-down menu and choose "Video for Windows".
3. Select a location and file name for the video and click "Create Video".
4. The PowerPoint presentation will be exported as a video file.
5. Open YouTube, sign into your account, and click the upload icon in the top right corner.
6. Select the video file that you just exported and click "Open".
7. Add a title, description, and tags for the video and click "Publish".
8. The PowerPoint presentation will be uploaded to YouTube and you will be able to view it online.