Playlist API key


I read the youtube playlist documentation but it only allows me to import max 150 songs. I read something about a custom API key. How do I do that?

Another question, if I have a playlist imported and I would like to add a bunch of songs to that playlist, can I just add them to another .txt file and just import it as the playlist that already exists? Or will this completely override the other songs in that playlist?

Thanks in advance.


Guide to get a api key:

(Please use the search function, it was the first result)

You would need a text file consisting of all songs you want in the playlist. Importing a second playlist with the same name will override the first.


Sorry my bad!