various problems - crosspack 1.2.5

I have some problems which I need resolving please....
Firstly I originally loaded Cross 1.2.5 from the cd and then came on the site to download the update which I did, I had to re-enter the register key, but I am still not sure if this was completed properly as I do not see any difference.
second problem:
While a track in playing on one deck and I load a track on the other deck, the track that is playing cuts out a couple of times until the track is completly loaded.
third problem:
the audio preference settings has to be reset everytime I boot up the software....Is there anyway to set this to default?
fourth problem:
On audio preference settings I was trying to select 48000hz from 44100hz as suggested on the site but it does not allow me to select this for some reason?
Please help!!
Firstly I originally loaded Cross 1.2.5 from the cd and then came on the site to download the update which I did, I had to re-enter the register key, but I am still not sure if this was completed properly as I do not see any difference.
second problem:
While a track in playing on one deck and I load a track on the other deck, the track that is playing cuts out a couple of times until the track is completly loaded.
third problem:
the audio preference settings has to be reset everytime I boot up the software....Is there anyway to set this to default?
fourth problem:
On audio preference settings I was trying to select 48000hz from 44100hz as suggested on the site but it does not allow me to select this for some reason?
Please help!!