on the up side, it was a pretty fast response time... I think he got back to me in less than 3 hours... which is way faster than he's gotten back to me via email, but without the terror of having to talk to him over the phone.
should I text him back something light and friendly like, "cool picture! sounds like fun! did you realize you were sending me an audio file of wild fans at fenway park? have fun with felix!"