I have 2 mp3 files with the same content but with different speed and volume level. I would like to copy the metadata from one to the other and only the metadata. I have seen this post, and was able to extract the metadata to a file. But now when I try to copy the metadata to the second file as described in that post, it copies the whole file as well. This then overwrites the audio itself as well as the metadata.
How can I only copy the metadata into the second file without copying the actual audio.