InvalidAccessError for some users only

The following error appears in the console whenever music should be playing, but only for some users. The exact start time differs between runs, even for the same user.

```
VM343:1 Uncaught InvalidAccessError: Failed to execute 'start' on 'AudioBufferSourceNode': The start time provided (-0.477551) is less than the minimum bound (0).
r.noteOn @ VM343:1
playWeek @ bundle.js:189
callback @ bundle.js:162
c @ VM343:1
(anonymous function) @ VM343:1
```

It happens when searching for myself and `torvalds`, but not `ajacksified`. Chrome 53, Ubuntu 16.04. Let me know if there's anything else I can do to help debug this.