Add support for ACE-Step 1.5 and ACE-Step 1.5 XL. Also added dataset captioning through the UI. (#785)

* Base ace step 1.5 xl added. Generating, still wip on training and ui

* Base training code done

* Fix some issues with caching text embeddings. Update sample cards to show audio

* Fix issue with quantizing ace step

* Add album artwork to samples with waveform.

* Cleanup logs

* Add album art endpoint to speed up album art loading

* Made an make video with artwork script

* Make ui handle basic audio models. Make multi line adjustments to the editor and better syntax hilighting.

* Add prompt tagging system for special tagged models.

* prompt tagging processing for ui working.

* Moved default samples to a special file so we can add more when needed and they can be adjusted for a specific model

* Add a captioner job with music captioner that is prepped for use with the ui

* Add basit ui setup for captioning modal and handeling captioning jobs

* Starting captioning job from ui working. Still better management for it.

* Better filtering of job options in the job view for captioning jobs

* Added qwen3 vl as a captioner for images

* Have an indicator when a dataset is being captioned.

* Adjust the way caption jobs look in the queue

* Fix a few issues. Adjust defaults.

* Version bump

* Added ace step to the readme.

README.md

@@ -43,6 +43,10 @@ AI Toolkit is an easy to use all in one training suite for diffusion models. I t
 - [Lightricks/LTX-2](https://huggingface.co/Lightricks/LTX-2) (LTX-2)
 - [Lightricks/LTX-2.3](https://huggingface.co/Lightricks/LTX-2.3) (LTX-2.3)
 
+### Audio
+- [ACE-Step/Ace-Step1.5](https://huggingface.co/ACE-Step/Ace-Step1.5) (Ace Step 1.5)
+- [ACE-Step/acestep-v15-xl-base](https://huggingface.co/ACE-Step/acestep-v15-xl-base) (Ace Step 1.5 XL)
+
 ### Experimental
 - [lodestones/Zeta-Chroma](https://huggingface.co/lodestones/Zeta-Chroma) (Zeta Chroma)