aces gold has a link for audio/video of the tracks they accept wagering on. most track websites have a link on them to listen or view as well. of course, the form is available over the internet and a host of other touting services.
aces gold is the only offshore i have used for horses. they are good, if they have the track you want. wagering a trifect part wheel is a bit cumbersome, however, because you have to place separate wagers -- like, sometimes i like to do a tri wheel like this: 1,2,3 / 1,2,3,4 / 1,2,3,4,5 (27$ for a 1 dollar bet). at aces you have to place 9 separate wagers to get this.