Q: [OT] concatenating audio files

Hi,

this is a bit off-topic, but maybe you can help me: When extracting the autio 
track of a concert on video DVD, I noticed that the *.VOB files each contained 
only about 16 minutes of music, resulting in multiple files. I extracted to flac 
for further processing, but now I wonder how to make one continuous sound stream 
of those:

Can I simple concatenate the flac files to make on big file (and then reencode 
that), or do I need special tools. Those sound chunks end in the middle of tracks, 
so I need a perfect solution for clear sound.

Regards,
Ulrich