Hey mate, I assume your sony uses the same as my SR7 and films in AVCHD
With CS3, you will have to download a plugin – I use the Mainconcept Mpeg Pro – in order for APP to be able to recognize and import the .mts files. There are stored on the Camera’s HD under AVCHD -> BDMV ->”Stream”, or at least on mine.
I found however that it is VERY sluggish to do so.
Alternately, you can upgrade to CS4, or numerous users suggest importing the file in Sony Vegas, and then exporting as HDV so you can edit in APP.
If you do with the pluggin route –
After you have installed the plugin
Instead of using the “capture function”, use the import function as you would for a regular photo, other file.
Hope this helps