The best alternatives to Tapes.AI are cchound.com, FreeSound, and Sample Focus. If these 3 options don't work for you, we've listed a few more alternatives below.
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AssemblyAI— Speech-to-Text API with superhuman accuracy
cchound.com is a library of carefully hand-picked music & sounds that you can use for free in your own creations, with a simple indication of what is required to use it.