What do you guys use to edit/sync audio tracks?

[LeXXuz]

Well... the last time I had to sync an audio track to a video file was way over 10 years ago and I can't even remember which tools I used back in those days.

So I was wondering what would be a good tool to do this job nowadays?

I'd like to add audio tracks taken from tv recordings to some of my favourite films from DVD/BD.

Adding simple delays does not work because of ad-breaks and what not in those tv recordings they get out of sync after every couple of minutes or so.

I need to cut/add audio frames at certain different positions to get those tracks back in sync again.

Ideally that tool should be able to play matroska files with common codecs to help in the syncing process.

I don't mind a commercial solution but it shouldn't be too expensive as I probably only need it a few times.

Any recommendations?