I have been using Life Fitness treadmills and elliptical machines that have the ipod hookups to listen to music and watch videos while working out for about a year now on my 3gs phone.

I recently jailbroke my phone for the second time to try this again, but once jailbroken, the fitness equipment will not output video. It has its own media controls so 3rd party video out options don't help either.

I would love to find a solution for this, but in the meantime I will just have to follow Apple's rules so I can catch up on TV shows while working out. So if anyone has has this issue or better yet, done this without the issue, please let me know your secret.