let abuf = alloc_audio_buffer(ainfo, duration, bsi.acmod.get_channel_map(bsi.lfeon))?;
let mut adata = abuf.get_abuf_f32().unwrap();
- let mut output = adata.get_data_mut();
+ let output = adata.get_data_mut().unwrap();
self.ablk = AudioBlock::new();
for blk in 0..NBLOCKS {