I'm currently working on a pdf interactive project. A requirement of the project is to have the music looped with buttons to control it which I have done, but I must be missing a step. I've added music and have made the "play", "pause", "resume" and "stop" button on the master page and I've also added actions to the buttons as well. When I export the file as a pdf interactive and open it in Acrobat, the music does start playing when the button is pressed, etc. but as soon as I go to the next page and try to "pause" or "stop" nothing happens or else I have a nice cannon effect as the song start ups again while the other is playing from the previous page. I'm quite new to Indesign and any help would be greatly appreciated.
Playing sounds/music in PDF is page-specific. You can't control the sounds/music throughout the pages. Only on the page you're on. This is a limitation of PDF and has absolutely nothing to do with Adobe InDesign.
If you want to know more about PDF media capabilities and limitations, your best bet is the Acrobat forums. (Acrobat has more controls than InDesign is able to access when it creates interactive PDFs.)
The best forum is the Rich Media/3D forum for Acrobat: