STEP 2 - Use Sound Recorder to convert WAV files to MP3 1. Run Sound Recorder. From the Start menu, select Programs > Accessories > Entertainment > Sound Recorder. 2. Click File and select Open. 3. Select the file you copied from the Sansa player, then click Open. 4. Click File and select Save As. 5. Click Change to select the format. 6. Step 1. Open VLC, then click "Media" > "Convert/Stream" from the dropdown menu. Step 2. In the Convert & Stream window, click "Open Media" to import the WebM file that you will convert. Step 3. Choose the "MP3" as the output format from the dropdown menu. Step 4. .