Just updated pc_tinytoon_img2clut.php on my github, it should works with 2.0 .IMG files now.
When you said the converted .WAV file is broken and can not be played, did you tried open/import it with an audio editor, like Audacity (https://www.audacityteam.org/download/)? In fact, you can also try other WAVE editor. It should detect the WAV as 22050 Hz, mono, 8-bit PCM and play correctly.
Good luck!
- Rufas
When you said the converted .WAV file is broken and can not be played, did you tried open/import it with an audio editor, like Audacity (https://www.audacityteam.org/download/)? In fact, you can also try other WAVE editor. It should detect the WAV as 22050 Hz, mono, 8-bit PCM and play correctly.
Good luck!
- Rufas