BEGIN:VCALENDAR

BEGIN:VTODO
DTSTAMP:19980130T134500Z
SEQUENCE:2
UID:<1234@example.com>
ORGANIZER:MAILTO:<test@example.com>
ATTENDEE;PARTSTAT=ACCEPTED:MAILTO:<EMAIL:test@example.com>
DUE:19980415T235959
STATUS:NEEDS-ACTION
SUMMARY:Submit Income Taxes

BEGIN:VALARM
ACTION:AUDIO
TRIGGER;VALUE=DATE-TIME:19980403T120000
ATTACH;FMTTYPE=audio/basic:http://host.com/pub/audio-files/ssbanner.aud
REPEAT:4
DURATION:PT1H
END:VALARM

END:VTODO

END:VCALENDAR