I do not have the time anymore to maintain it, and maintain it professionnaly.
Maybe i would work on it later, but be aware it could take years or never happen.
If you want to be notified when it is up again you can follow playlist converter on Facebook and Twitter.
Sorry for the inconvenience and feel free to use other alternatives.
You can create Playlist Converter Url with prefield playlist to convert or grabbing playlist from an external URL.
It is like a user use the text input playlist but the text input is already field.
If you have, for example, a website with playlist you can provide an export button.
Some examples using Node.js, javacsript in the browser and the general process to adapt to any language: