Sample dedup — is there any tool that actually reads DAW project files?

[Adrian Dam]

I have 40GB+ library after years of Splice, free packs, and old project exports. The same sample lives in 4–5 folders. Nothing I've tried handles this cleanly.

What I've tested:

Czkawka / dupeGuru: fine for byte-identical files. Audio matching gets noisy on short samples. They don't read .flp or .als files, so deleting "duplicates" can break projects.
Whats your experience with Sononym? Its quite expensive, not sure if its worth it?

Is there anything out there that reads DAW project files before suggesting deletes?
If your library is 10GB+, what's your actual cleanup workflow?
Splice users: do you know what's already in your Splice folder vs. loose copies?
If a tool got this right, what would you realistically pay?
Half curious, half tempted to build it. Want to make sure I'm not missing something obvious.