Audio input not accepted with llamacpp for Nemotron 3 nano Omni ?

Llama-server does not accept audio input (or video for that matter) with Nemotron 3 nano omni (unsloth). I’m on a recent build of llamacpp and I redownloaded Nemotron, and I have the mmproj loaded too. It still accepts images, but not audio, in fact the audio input option on the llama-server webUI is greyed out. Gemma4-e4b audio input works, so I know it’s not something to do with llamacpp, it seems like something is going on with llamacpp’s compatibility with nemotron 3 Omni specifically

Is this a known issue? Whats going on that’s getting in the way