Why can't I download music to my Q10?

I used to just download it through bb world but no music or videos are listed for purchase there.....

You need to use the 7 Digital app. It's in BB World.

JB

Posted internationally thanks to my Passport

You may need to read this:

BlackBerry shutting down music and video stores on July 21st | CrackBerry.com

Just do a transfer from pc to Q10

Q10 with Telus on 10.3.1.396