Single Seat License

Hi there.

Found a music theme but aint familiar with license regulations.

https://www.pond5.com/de/stock-music/64284698/space-theme.html

Would like to use that track as intro for my youtube videos.

If I purchase a license containing only a standard license with one seat what I am allowed to do with it?

Am I only allowed to use it once or does it only mean its only legal to be used by me and I can reuse it as often as I like?

Thanks for your help