You can click 'Add Audio' or 'From Library' to import multiple audio files. In the list, you can adjust their order. After clicking 'Start Merging', the system will connect them in order into a single file.

No. The merging process is based on merging the original audio data without lossy re-encoding (unless you process it separately on the conversion page), so the sound quality will be perfectly preserved.

The current merging feature recommends using audio with the same sample rate and channels for the best results. If the formats are significantly different, it's recommended to use the 'Convert' feature to unify their formats before merging.