In Cinema Studio, I can upload audio files, but some cannot be selected or used as reference audio. The upload window lists MP3, M4A, and WAV, while the generation form says the reference track must be MP3 or WAV. Could you clarify the exact supported formats, codec/sample-rate/duration limits, which video models support reference audio, and the correct steps to attach an uploaded track? Is there a known issue where audio uploads successfully but then fails validation? I want to use my own recorded voice as the reference.