Let's be honest guys, not every song from the each Sonic game on the Genesis was a gem. Some were far better and memorable than others, so I don't think we can start bashing the music of the game just yet. There are still three slots to be filled on that music download page, so we'll have to wait and see how those pan out before we can justifiably criticize the game itself as having poor music beyond this one track.
As for me, I didn't mind the song too much. It didn't grab me, but it didn't offend either. I like the retro drums and the familiarity of the synths used, but something tells me if the song had its tempo upped a little, it might help give it a bit more pep (like if it's 100BPM right now, maybe shift it to 95BPM or a touch lower).