Fix memory leak of AudioSource #777

Job	Run time
Check for changes	5s
REUSE-3.2	10s
Test (22)	16s
Test (18)	24s
Formatting	27s
Test (latest)	21s
Test (20)	21s
stable - aarch64-apple-darwin - node@20	4m 33s
stable - x86_64-pc-windows-msvc - node@20	9m 19s
stable - x86_64-apple-darwin - node@20	5m 43s
stable - x86_64-unknown-linux-gnu - node@20	7m 2s
stable - aarch64-unknown-linux-gnu - node@20	6m 45s
Release	-1s
	35m 25s

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