I've renamed the radio stations in the Sims 3 to match my Sims 2 upload of the radio station renames. Also included is a Canadian version of the TV channel renames. Keep in mind I know nothing of Canadian TV, but I got the info from someone who posted in my TV Station U.S. renames thread, plus I did a little research online. Here is a list of what's changed.

TV:

Action World is now Mentv
Got Garden is now HGTV Canada
Terror TV is now Scream
KidZone is now YTV
Fishing Francais is now OLN
Romantic Rendezvous is now Slice
Cookin' Cable is now Food Network
Sports Universe is now TSN
Super Shopping Network is now Shop TV Canada
Halls of History is now History Television

Radio:

Classical is now WKPL 88.1 Classical Radio
Custom is now iPod
Electronica is now WDANC "The Supersonic Dance Hits"
Indie is now Cool Rock 99.9 Indie Wave Radio
Kids is now KidzBop 94.2 FM
Latin is now WEESP Corazon Latino
Pop is now WABB Top 40 Hits

If you would like to make your own radio station renames (or TV) feel free to edit my own here in S3PE by opening it, and click edit at the bottom, and then change away! Just remember to save it as a different file name and you're done. Or you can download and use Stubble for even more STBL options!

This only works in the English versions of the game. Also on the radio station renames, I did not include the World Adventures new radio stations, couldn't think of anything that needed to be changed there, and also it's not so easy to change World Adventures STBLs (for me at least).