Since a few users notified me that the ID of my songs doesn't seem to work in GD, I took the time to find a solition to the issue. Sadly, I couldn't find anything that could explain why they're not working.
Except for the fact that the compatibility between Newgrounds and GD is rather poor. But there's nothing I can do about it.
I tried contacting the developer of GD directly, but my e-mail received no response. I can only guess that it'll be resolved in one of the future patches, but seeing that GD has been around for a while and the issue seems to repeat itself every time, maybe it's just out of developer's reach.
There is also another possibility.
I do not allow direct downloads, modifications, nor use of the songs without my permission. I don't see how it could affect whether it's playable in GD or not, but I guess it's possible.
But, even if that was the case, I will not change the way I'm uploading my music. Sorry (not sorry).
BlueAlpha14
The developer needs to remove the feature entirely. All it's done is corrupt the audio portal to no end.