I need a video editor like the old iMovie.

So, the old PPC eMac I'd been using to edit videos with iMovie 3 finally died a few months ago. I bought a used iMac to replace it (iMac5,1, Intel Core 2 Duo, 2.16 GHz, OS 10.6.8). Imagine my horror when I first opened its version of iMovie 11 (9.0.4) and saw what a joke it is compared to the classic version of iMovie I had been using! A childish little clip assembler bearing the name of what was once a useful video editor! I use movie editing mostly to make videos of music performances with synched soundtracks, so this iMovie 11 is useless to me. I MUST have a timeline viewer and audio channel viewer like I used to have in iMovie 3.

My questions are, then—is there a free or cheap video editor available that will work on my computer, that has timeline and audio track viewing similar to the old iMovie? Or, is there a way I can still get an older version of iMovie with those features, that will run on my current computer?