presto: audio: fix error

Change-Id: I6ecf222eeb42efcba45bb2639f0d97b7706fd188
presto: audio: define PRESTO_AUDIO

Change-Id: Ie801771f7409dfb4215c99656482623c6e419c0e
presto: add standalone app AdvancedSettings

Change-Id: Ib95b93f2deda1502408be11ec9589c21ca63bcb4