AMD GPUs get ACE-Step 1.5 music generation support

Local inference on the RX 7900 XT reduces generation time from 2.5 minutes on CPU to under 60 seconds, systematically addressing ROCm-on-Windows bugs in torchao and torchaudio. Unlike proprietary models like Suno, ACE-Step's MIT license and local LoRA training support allow for unprecedented artistic control and privacy. With support for 10-minute tracks and semantic lyric editing, commercial-grade music generation is becoming accessible on consumer GPUs, signaling a "Stable Diffusion moment" for the audio category.