I'm not sure if anyone in here is completely familiar with this, but there is a music organization known as JASRAC in Japan, which you can read more about them here, but I was doing a little bit of digging on their website and found a particular entry that might be worth digging into: Essentially, the entry designates two things: Both "Sonic X BGM" and an entry for "Animation Movie "Sonic X" BGM", which is what I find more... curious. A long time ago, I recall there being talks for a movie if Sonic X had proved to be successful. I wonder if this might be remnants of that said project? Sonic X was also supposed to get at least 26 more episodes (it had shown up in TMS's fiscal report with more episodes being in production for a release in... I wanna say 2006/7ish? Been awhile since I saw the report though). So not sure what to make of this.
I wish there were more episodes of Sonic X, that would mean Silver and Blaze. This is rather interesting. A Sonic X movie would have been nice.