another, free mts-to-mov tool
REMUX
http://www.nef.wh.uni-dortmund.de/%7Emt/remux/
usually, mts comes within a AVCHD-structure and can be imported by iMovie.
if you have a 'stray cat', a mts without that structure, there's no need to convert - inside the mts is a well-hidden h.264 file, iM can handle. REMUX 'strips off' the mts-wrapper, and puts it into a mov-container - ultra-fast and a 100% lossless.
enjoy!
https://sites.google.com/site/karstenschluter/mts-to-mov
hint: 50$ is still a good investement for CLIPWRAP, due to it offers much more than just re-wrapping ... 😉
MacMini2.26/2GB, Mac OS X (10.6.5), iM09/FCE4/Lumix FZ38 … MTP=better invention than warm water!