3 more requests for considered:
1) Alternative record format. A lossy compressed format for the record feature. Keep the WAV format, but include a compressed format for smaller recorded files.
2) Move the Language text into a separate ISO text file, that can be edited offline (by knowledgeable users) for supporting other languages.
3) Move splash screen into a separate file, like animated GIF or PNG, for user customization.
Repeated request:
Customized desktop color RGB value, or background.jpg at root level for user customization.