Good news everyone!
We have rolled out push sound support for Android!
Grab the latest Android sample in the SDK section in the control panel.
To use the sound go to the advanced section of the control panel and in the “Android” options specify the sound name without extension.
For the sample you could use “push_sound” for the corresponding “push_sound.mp3” file in the project. Please note the sound you want to use with the push notification have to be present in your project.