i’m a newbie here and was having the same problem. i shoot with a Sony NX-5 in the AVCHD codec, yielding me mts files. nice to see they can be edited here natively as was not the case in FCP. anyway, i would drag an mts into a newly-created AVCHD sequence. video, no audio. every time.
so i made a new sequence. chose a random codec (DVCHD in this case), dragged an mts into it – it asked me if i wanted to change the sequence setting, which i did) and voila! the clip had audio, as did all mts clips following.
hopefully that helped out someone else…
thanks for helping out a bonehead!
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FCS3
2.66 GHz Quad-Core Mac Pro
6GB RAM
NVIDIA GeForce GT 120
…and a few TeraBytes o’ storage
(then it’s on to PetaBytes, ExaBytes and MosquitoBytes!)