AVCHD (MTS/M2TS) No Audio in After Effects CS6

Hi,

I am trying to edit a lot of footage, which are .MTS files. When I import them into After Effects CS6, there is no Audio, even in Premiere. I cannot convert the footage, as it will take too long because there is over 250 clips.

Thanks!

Specs:

iMac Mid 2011

Intel core i5 2.5GHz

AMD Radeon HD 6750M 512 MB
12gb Ram

OSX 10.7.5

Adobe After Effects CS6