If anyone would like to play with something more interactive, I'm testing out some new effects on Ambiphone, my ambient soundscape web app. The test version is at https://test.ambiph.one

There's a basic playback speed control now (basic in as much as it doesn't preserve pitch) plus things like reverb and delay effects

Here's some slowed-down ambient music: https://test.ambiph.one/?m=1-Slow+Realisation-ap50a25c60

And a cat purring at 50% speed makes a pretty convincing lion: https://test.ambiph.one/?m=1-Lion's+Den-aa8a34c60e37f100ac50...

(Audio may be a little glitchy on Android Chrome if you have lots of sounds playing - I'm debugging that at the moment)

Hey thank you for sharing your project! I am really enjoying using it while working at home. A quick observation, the link to share a mix for the birthday is not clickable cause the save menu is clicked instead (yes I'm a QA Engineer). Great feature to save mixes!