It can be processed with VideoStudio X4. The method is as follows:

1. Insert the audio files into the 00:00:01 position of audio track 1 and audio track 2 respectively, and scrub Drag the tool to the 00:00:01 position. Click the "Mixer" and the "Project" button under the browser window, click "Music Track 1" in the "Surround Mixing" panel, and at the same time, pan the middle music icon in the 5-channel diagram to the left (that is, the left channel); click "Music Track 2", and at the same time, pan the middle music icon in the 5-channel picture to the right (that is, the right channel);

2. Click the play button below the browsing window , listen to the volume of the left and right sounds. Assume that the left channel sound is small--

3. Drag the scrubber to the position of 00:00:01, click "Music Track 1" in the "Surround Mix" panel, and adjust the volume slider upwards Go to the appropriate position, listen to it, and then adjust if you are not satisfied (don't forget to drag the scrubber to the 00:00:01 position before adjusting).

No problem, share and create sound files.