How are these obtainable?

 

Like, I know how I can just look on a CD I have bought.

 

But I how do a get one of these myself? I own ISRC Codes for Downloads, but how can I get my own Barcoded Tracks?

 

Thanks.

see

 

http://www.theofficialcharts.com/chart_rules.php

 

there is a PDF file called "BPI Barcoding"

 

which may help.