I picked them up yesterday in Winti at dt. Charged, then listened to music, then paused music and I went to eat. No one has touched the speaker. I come back after dinner press play znd no music comes out. I turn the speaker off and on again no sound nigs. Reset with power button and - also nothing. I can control the volume, press play stop everything happens on the mobile phone but no sound comes out of the Wonderboom Speaker. It's as if it has hung up.... does anyone know this?