It's a pity that compression is likely to provide subtly different data under different network conditions. If everything were lossless we could just use hashes as identifiers and proceed without the participation of the apps.
After all, they have no incentive to make this easy for us.
This is actually a beautiful idea. It'd definitely be possible for music purchased through bandcamp since lossless is generally available for most releases. Commenting to bookmark this.
After all, they have no incentive to make this easy for us.