Slowmotion audio and video problem

I have 2 problems. I have 4 short video clips that i overlaped to fade from one to another. I adjusted the playback time in properties to do slow motion. When i play back, the audio which a song in its own track sounds horrible and plays slower than normal and when it gets to the fade over slows down and sounds even worse.

Second, when i adjust the playback speed the clips automaticly shorten in the timeline and mess up all the fades and playback.


I have newest software version and am running 64bit windows