Firefox OS v1.3 Mozilla build ID:20140404164003 DEFECT DESCRIPTION: Bypass alarm and enter music, both ringtone of alarm and music play. REPRODUCING PROCEDURES: 1. Enter Music palyer and Play music; 2. Enter clock->alarm, add a new alarm; 3. Waiting for alarm expired; 4. Click home key and enter music play by meau list; 5. Music and ringtone of clock play at the same thim.--KO EXPECTED BEHAVIOUR: Ringtone of clock should be mute and vibration of clock should be continuious. CONTACT: ASSOCIATE SPECIFICATION: TEST PLAN REFERENCE: TOOLS AND PLATFORMS USED: USER IMPACT: REPRODUCING RATE: