Adjust playback speed on Vimeo to watch videos faster

To answer both questions:

1. Is it not possible to see which videos have not been added to any album.

2. You can add multiple videos to an Album from the Album's Settings page.
   Album > Settings > Videos > Add more videos

When building an off site list of Vimeo videos, you will need to use the API.

Vimeo's new API has a lot of the features you need, and you can get started here: https://developer.vimeo.com/api/start

The above link will walk you through app creation, and then the endpoint varies based on the videos you want to see. It's pretty intuitive though, so start here: https://developer.vimeo.com/api/endpoints

If you want to see your videos, request /me/videos. If you want to see all videos in the staff picks channel, request /channels/staffpicks/videos.

Make sure to read the Authentication documentation, I expect you are building a Single User application and can hard code your authentication token into your app.