Also keep in mind that even this port is a decade old. It's using MIDI, for god's sake.
They replaced all the music with .ogg files, so there's not really any excuse for the badness. Also, the "new" versions don't sound like the old PC ones using any MIDI synth. If they were the XG ones, it might be "okay", but they're actively worse.
On the plus side, being .ogg files just sitting in the file system does make it very easy to replace them. Yeah yeah, PC master race and all that, but I still don't think you should judge a game based on its moddability.