test-audio_out sends one or more raw audio streams to the "Audio_out"
service. The raw data must comply the Audio_out standard format.

! <start>
!     <filename>test-audio_out</filename>
!     <ram_quota>1M</ram_qouta>
!     <config>
!         <filename>audio1.raw</filename>
!         <filename>audio2.raw</filename>
!         ...
!     </config>
! </start>

       Example configuration entry
