I made a BizHawk lua script to record your movement in the game and play it back as an overlayed ghost. I built it as a tool for myself to practice speedrun movement, but I hope others can find it useful. Note that you wouldn't be able to submit to leaderboards if you ran with this tool on (I don't think BizHawk is leaderboard legal anyway).

A short video if you want to see it in action:

GitHub link for more info and downloads: https://github.com/Piper1618/LuaGhost-for-Spyro-the-Dragon