Hi!
I've recently made VLC my main media player (perhaps a mistake), and I thought I noticed tiny pitch changes at first. So I did an experiment to confirm, and yes, indeed, VLC changes the pitch of my music files shortly after seeking to some point. So far, it only seems to increase the pitch. (It was an MP3 by the way, but it seems to happen to .flac too)
To test, I took a random music file, recorded before- and after seek, and then synchronized the starts. As you can clearly hear, the music quickly gets out of sync due to the pitch change:
http://www.youtube.com/watch?v=MRo_rL9Vt50
I'm suspecting there's an option that makes VLC do this, which I might be able to disable. Any ideas would be great! I'm using VLC 2.0.5.