There are several ways to download "On the Floor" as an MP3. Here are a few options:

However, be careful when using third-party downloaders, as they may not always be safe or legal. Make sure to research the service thoroughly before using it, and always be aware of the potential risks.

Use the "Download to Device" feature within these apps before going offline. This gives you the same benefit as an MP3 without any legal risk.

Mia navigated to her "My Music" folder. There it sat, the generic MP3 icon looking like a digital holy grail. She double-clicked. Winamp launched.