Missing menu options

I’ve been trying to figure out how to add music to RetroArch on the Vita, but the only options I see in the Settings’ Audio tab are “Audio”, “Audio Latency”, “Mute”, “Volume Gain”, “Resampler Quality”, “Synchronization”, and “DSP Plugin”… Is there any way for the “Menu Sounds” option to appear on the console?

I think it’s a threaded task, and the consoles typically don’t support threading.