Thanks mate! Your a star! The codec works and plays them fine with the extensions on Windows Media Player. However I am re-copying and pasting them all from the camera just to make sure.
As for uploading to YouTube, it does actually accept .MTS files as I uploaded one of the vids last night without problem, however the rest I've tried don't but again might be different once I have transferred them all again. I've not tried the Photofunstudio software that came with the camera either so I might try uploading them using that. Even so, converting might be better. Can you recommened any good converting program that basically retains all of the videos HD quality (sound, size, frame rate etc) please?
As for the concert, it was an Oasis concert in Sunderland with support acts on Wednesday 10th June. I got one video of one of the support groups I like Kasabian doing Fire in full length HD, this was the one that uploaded to YouTube fine as a .MTS file which you can see here:
http://www.youtube.com/watch?v=CGltuIbZTL0
I might give the re-uploaded Oasis videos one more try by testing a file of one of the many songs I got, and if YouTube has an error with that then best thing to do would be to convert from the looks of it.
I might upload some pictures I got here as well, it would be good since it would show how diverse the TZ7 is too, you can pretty much do anything with this camera in my opinion.