Turn on debug mode and when the sim jumps, your game should generate an error log. Attach it here.
Also, I vaguely recall a hack from MTS2 related to radios and cars. I forget what it's supposed to do exactly, but I think it might be from Numenor. it either prevents or forces sims to turn off the radio or something. *shrugs*
Anyways, post an error log regardless, in case it happens to be a Maxis bug.
Ste
Oooh... now you mention it.. I think I *do* have a hack by Numenor that makes sims ... oh wait. The one I use is to make them turn off TVs, not stereos. I use custom MP3s for most stations and like to leave the tunes on, so I don't think that's it.
Anyways, it probably won't be today (if I fire it up, I'll be there half the day and I got things to do sorta-soonish), but I'll post that log ASAP. I kinda doubt it's a maxian bug though (hah! say that with a straight face! LOL) since if it were, I'd expect my searches to turn up *something*. But eh, we'll see I suppose and hopefully find some sort of solution.
-Kitt