Nov  1 12:15:55 VERBOSE[19139]:     -- Created MeetMe conference 1023 for conference '9000'
Nov  1 12:15:55 DEBUG[19139]: Scheduling timer at 160 sample intervals
Nov  1 12:15:55 VERBOSE[19139]:     -- Playing 'conf-onlyperson' (language 'nl')
Nov  1 12:15:55 DEBUG[19139]: Ooh, voice format changed to 4
Nov  1 12:15:59 DEBUG[19139]: Scheduling timer at 0 sample intervals
Nov  1 12:15:59 DEBUG[19139]: Scheduling timer at 0 sample intervals
Nov  1 12:15:59 DEBUG[19139]: Placed channel IAX2/320@320/2 in ZAP conf 1023

ps waux:

asterisk 19159  0.9  0.4  4648 2368 pts/0    S    12:15   0:00 mpg123 -q -s --mono -r 8000 -b 2048 -f 4096 QuajiroPromo.mp3 TristeAlegriaPromo.mp3