cheap Arduino sound (mp3) module

[Markus]

I just posted this in the Facebook Mouse Droid Builders group, and I thought that this is also interesting here. The DFPLayer module is a really cheap solution for playing sounds (mp3, wav) on the Arduino (via serial connection). It is available for less than $2.- on AliExpress. The module can access more than 25,000 files on a microSD cards (up to 32GB, formatted to FAT16 or FAT32), and can directly drive a speaker (mono) or be connected to a stereo amp via its line out.
Some people (including me in my initial attempts) have experienced some hum or buzzing sounds when connecting the module to the Arduino. I have tested a reliable setup and I am currently implementing this in my mouse droid and other droids. For those who are interested, I have posted a detailed description on my blog. This also describes how to use the original commands, so that no additional library is required.

My only remaining question is now: What sounds does the H015 droid make? Where can I get the soundfiles ...