No audio importing AAC LC audio into Vegas 11

I'm importing MP4 container files shot using my Android Motorola Droid 4 phone into Vegas 11 Pro and I'm not getting any audio. Mediainfo shows AAC at 128kbps, 41.1KHz, 2 channels AAC (LC). ffdshow shows using libfaad2 codec for AAC. Audio plays fine with VLC. I have Quicktime 7.7.3 install (not sure if that's relevant). I notice that when I drag the clip from Project Media into the timeline it doesn't split into 2 tracks (one video and one audio). Not getting any activity on the Mixer master that I can see.

Thanks,
Dave