As a really real Jazz Musician and expert i have Sync tones on my projects (It makes Click click) BUT i ignore them because i am a Jazzer ! Music must be free for me as a really real jazzer .........timing .......key ......uninterested .........at the end it is jazz ! 

But for the more modern Music this syncing is really usefull ! Some really helpfull tips here ! 

Did someone call.....? Must be some delay on my.....:)

Yeah, "Out of your minds" gets my vote, Marty! 

Donnie;

I'm not sure if you got an answer to your original mystery.

Some DAW's, I don't know which, add miliseconds to the beginning of tracks. I don't know why. I know Logic Pro does not do this for bounced tracks. I can't speak for exported tracks because I never use this feature.  

We all are aware of this happening with mp3 bounces, and Logic even does this, but when using Wav, Aif, and other non-compressed formats from project kontributors, I tend to get random applications of the same mystery you speak of. I never stopped to ask who is using which DAW.

I do know a few Logic users, and I use Logic myself. The tracks I bounce and the tracks I get from known Logic users don't have this odd gap at the beginning. Sync tones line up perfectly at the 00:00:00 point.

I noticed that you and Bill both tend to use export instead of bounce in some cases. there may be a setting for the start and stop times. I've seen an option to add a tail to exported tracks, but I've never explored an opening time space. 

Just a note on mp3's having more space at the beginning - that's due to the mp3 header. That's used in order to manage how long the song is and the id tags, etc so that the player can show a percentage of competion, pause, jump around, etc. I wish there was an option in logic (maybe there is?) that would knowingly strip that header when importing a track.

Export does not provide an option for where to start / end in logic. Audio tail inclusion means stuff like verbs, delay etc. will be accounted for on the export.

Bounce does include more granularity, but is slower and exports the full length. Export will create a file that goes to the end of the track's performance. So my solo export might be from measure 1 through 100 where the solo is measure 92 through 100, whils the song might go to 148 measures or something. A bounce is the full length unless you define the stop point.

@SLV - Jeff, thanks for the comment.  With Pro Tools exporting or bouncing is determined by what you tell it to export or bounce.  If I highlight a specified clip (audio region - a complete guitar track, say) then ONLY what I highlight will be exported or bounced, depending on which option I choose in Pro Tools.  Bouncing the track will include any fx, eq, etc I may have added in my mix in my studion.  Exporting, send the track out completely dry.  But in either case, it only sends what I highlight, and I have always tried to be careful to only highlight on the grid the exact region to send, including the sync tone. 

No, the problem I mentioned at the outset (if it really IS a problem per se), is not a function of export or bounce with Pro Tools as far as I can tell.  For example, if I export or bounce a track as say, a Wav file, then import to my Audacity program to convert to an MP3, and then re-import the newly created MP3 back into Pro Tools, there will be no additional space.  BUT, if I export that same Wav file (or an MP3) to Kompoz, and download the exact same track back, whether exported or bounced from Pro Tools, there WILL be a bit of space added on the front end, even though there was absolutely NONE when the track was originally exported or bounced. 

It seems that it ONLY happens with upload/downloads to Kompoz. 

So my question has simply been...who or what added that little bit of space?  Again, I tell you its Gremlins!  But as its no biggie to just zoom in, snip it out, and line up the track, it isn't worth quite all this fuss!  But, the banter has been quite entertaining at times in any case!  So it was worth it to bring it up!

Interesting. I never thought about it coming from Kompoz. Of course I only have experienced a snippet of the situation. I know that wav files coming from known Logic users tend to line up without need for adjustment unless of course the person selected additional space at the beginning. I'm not familiar with pro Tools and can't say that I know of tracks that came specifically from Pro Tools. 

Gremlins to be sure!!

See Jeff..I knew you'd come round to the Gremlin theory!