audio/x-realaudio
ra
audio/x-realaudio
aac
audio/aac
m4b
audio/mpeg
m4a
audio/mpeg
mp3
audio/mpeg
dfxp
application/ttaf+xml
vtt
text/vtt
html
text/html
htm
text/html
Here is the updated code with the copyright text modified as per your request:
```php
