Open the Batch Converter using the menu Tools -> Batch Converter.
Step 1: Select Files
Tap on the Add button and browse to the files you want to process.
Tap Next when you have added all the files.
Step 2: Select Commands
For each command you want to apply to the files, tap Add, select the command and then tap Add again. You can reorder commands by dragging the items in the list.
You can also use a previously saved command list. These are called scripts.
To save a script, tap Scripts, select Save Script…, navigate to the folder in which to save the script, give the script a name and tap Save. To load a previously saved script, tap Scripts, select Load Script…, navigate to the folder with the script, select the script and tap Open. To remove a loaded script, tap Scripts, select Remove Script… and tap Remove Batch File.
Step 3: Select Output Format
By default WavePad will save the files in the same format they were loaded in. But if you want to convert the format select "Convert to file format", select the extension. Some files (e.g., wav or mp3) have other options (bitrate or codec) which can be changed using format options.
Note: if you want to change the sample rate use the Convert Sample Rate comment in the commands (above).
Files are saved in the same folder they were loaded from. This means they will be overwritten when saved.