Hi Josh,
I have news on the discussion: I built a cape which holds one TLV320AIC3007. The connections w.r.t. the Beagle Bone Black are exactly as Adafruits BeagleBone Audio Cape Rev B (http://elinux.org/CircuitCo:Audio_Cape_RevB). Unfortunately there is no dts-File provided yet from Adafruits. I played with the dts from Rev A Audio Cape and altered the connections accordingly. So far no luck. Also it is unclear to me, if I need to built the new ASOC driver.
The site
http://code.metager.de/source/history/linux/stable/sound/soc/codecs/tlv320aic3x.c
states some recent updates to the driver w.r.t. to TLV320AIC3007, which cannob be on my current Angstrom-distirbution (which is currently from somewhere June 2013).
So far I only had little time to try. I need to read up on how to compile the driver, I have no idea about that. Instructions and ideas welcome.
Regards,
Markus
P.S.: I try to post pictures of the board soon.