Delete and Move not working in Garageband

This is not so much a question but a solution. When editing audio in Garageband, it doesn't take MP4 files. I mean it will download into it but using the Delete and Move feature doesn't work because GarageBand doesn't support MP4 files. What you have to do is download the file. Move that file to your Apple Music playlist. Highlight the file and go the upper left corner to file. Then in the dropdown menu there will be something that says convert, then it will say convert to AAC file and that's what you want. Your audio file will begin converting to AAC. Then drag and drop that file into GarageBand and you'll be able to delete and move. I hope this helps!