Hello. I may have finally figured out what the problem with downloading my music for Geometry Dash might be: copyright. You see, I use samples in my music that may be copyrighted (although I don't much care for that stuff) and Newgrounds has a rule that tracks including such samples (even with the artist having the rights) cannot be used for GD (but GD itself doesn't have that rule). So? What do we do? Easy; raw WAV files.
If (and I mean if because I don't play GD) you can upload your own device WAV/MP3/OGG files to GD then you can request those specific audio files from me and I'll send them over to you via an E-Mail. Not downloaded through NG itself (it'll be blocked I presume), but via E-Mail. I will send you the RAW, un-compressed original WAV file from my production. This SHOULD fix the issue. So, if you want to use my track, DM me and I'll be happy to send it over. Take care, y'all!