Glad you figured it out! Potentially if your music player is responding the button presses (rather that via the commands issued from GadgetBridge) you can use https://banglejs.com/apps/#hidmsic
The difference is that the app above makes Bangle.js look like a Bluetooth keyboard - so when you send a command it seems to the phone like you're physically pressing a button. While it's a bit more hassle it might work with your app more like you expect.
Also, the BangleApps repo isn't automatically updated - I manually do it maybe once a week. If you want the absolute latest then you can use the GitHub version: https://espruino.github.io/BangleApps/#gbmusic
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Glad you figured it out! Potentially if your music player is responding the button presses (rather that via the commands issued from GadgetBridge) you can use https://banglejs.com/apps/#hidmsic
The difference is that the app above makes Bangle.js look like a Bluetooth keyboard - so when you send a command it seems to the phone like you're physically pressing a button. While it's a bit more hassle it might work with your app more like you expect.
Also, the BangleApps repo isn't automatically updated - I manually do it maybe once a week. If you want the absolute latest then you can use the GitHub version: https://espruino.github.io/BangleApps/#gbmusic