I made a Winamp plugin that broadcasts what song you're playing as a Discord Rich Presence.

An uncommon scenario? Sure, although I'm not too worried about that. This idea of functionality came from the integration Spotify has with Discord right now, plus there are a lot of other interesting ways in which app developers are implementing Rich Presence.

The main challenges for this project were understanding not one flow of communication, but two; the Discord RPC API and Winamp plugin architecture. You figure out how to do one, then how to do the other, and then merge the result together. One thing I am grateful for is the fact that Winamp is debugger-friendly and can also be launched by a debugger without issue. There wasn't anything too gnarly that happened for this project but it helped to be able to step through some things- for example, the plugin configuration menu code-- to debug. There was one problem where DialogBox was being called with NULL instead of the proper module handle, and it would indeed create a dialog box but of an unexpected type. It helped to be able to step through and debug this.

What it looks like, in action:

The source + binary distributed through GitHub repository here: https://github.com/clandrew/wdrp

Problem solved!