oh derp, yeah you'll need the 4.2 gapps linked in OP.
I just did a complete wipe (even wiped the sdcard), installed cm10.1, and the 4.2.1 gapps (I redownloaded both). Same issue.
I can't get a full logcat (
menu/recent apps button does not work, and I'm using the CatLog app, can't figure out how to download the logcat to sd card) so here's the important bits, typed by hand:
FATAL EXCEPTION: MicrophoneReader
android.content.res.Resources$NotFoundException: File res/raw/open.wav from drawable resource ID #0x7f080009
...
Caused by: java.io.FileNotFoundException: This file can not be opened as a file descriptor; it is probably compressed
that all came from the same stack trace (there is only 1 stack trace anyways).
EDIT: Here is the stacktrace from the logcat + some surrounding text
http://pastebin.com/BM1KJ4Cp