I’m not sure if I’ve seen that one, I’ll have to check it out, thanks!

Is it this one? http://weebls-stuff.com/toons/alpaca-animated-music-video-mrweebl/

Or maybe you were referring to the Llamas In Hats series? https://www.youtube.com/playlist?list=PLBE8C175E9FAAA34A

I was always partial to the Amazing Horse one for some reason. http://weebls-stuff.com/toons/amazing-horse-animated-music-video-mrweebl/

I used to listen to it for hours and a weird quirk of Flash animations was that often the audio track and the video were milliseconds off so over time it would get very out of sync.