No sound when playing a clip that's imported

Hi!

I have a little problem.
When i try to play a video clip that i have imported into Premiere Pro i can't hear any sound. However if i create for example a "Bars and Tone" i can hear the sound just fine... Also if i import some audio, for example a song, i can hear it...

I have noticed that when i import just audio and put it in to the timeline the bar goes to a audio track, and when i imported a video that i had made with Sony Vegas Pro and inserted that on the timeline there was a seperate audio bar (and it worked).
But when i import these other clips (that i have recorded myself) there is no audio bar, just the video bar...

I hope i could get some help becouse this bothers me alot becouse i would like to edit my videos with Premiere Pro instead of Vegas Pro and it's a little hard without any sound...

Thanks.

Edvin Pohto - Finland

Yeas done that, still no sound...

But there is no sound bar...
I have only one clip that the sound works for and thats the Sony Vegas clip and in that clip there is a sound bar...