I've posted about the Swedish bolide in the "show off" forum. Here are two videos that are not mine in any way. They are simply too amazing not to be shared. Listen carefully, the first sonic boom arrives less than 30 seconds after the flash (the exact timing is still a bit uncertain, as I've discovered that the audio and video are slightly out of sync, but I've verified with the owner that the camera delivers video in correct speed and the audio eventually lags behind, so the delay is certainly less than 30 seconds). We must take into account that what we hear is not the flash, which happens mainly between 30 and 10 km altitude, but the transition to subsonic speed, which happens several seconds later. One possible solution (not the only one, but the one best fitting other data) is that it happened 7 km away at 3 km altitude. According to the camera owner the first boom was really loud, and felt like a punch in the chest.
What is heard immediately after the first sonic boom is also interesting, which has been confirmed by witnesses. There's a whizzing sound, like an incoming bomb or rocket, rapidly decreasing its frequency. This has been reported by many people who have witnessed other large fireballs, but I'm not aware of any actual recordings of it. Here it is, though the audio quality is not the best. I can't think of any other explanation than it's the sound of the meteor body itself, a combination of deceleration and doppler, but this is something we need to discuss with several experts.