GridStream Productions

I'm looking for some help on remixing musical tracks, and what programs to use. If anyone knows how to do the following things, please contact me.

1. Cutting and pasting a portion of the music over and over again, or otherwise extending a music track to be loopable.
2. Adding new music to an existing track without a musical keyboard.
3. Changing pitch or speed of sung lyrics.

One word! (well two acrually) "Cooledit Pro" or alternatively "Soundforge"
Both does all that, not too sure if Soundforge has multitrack editing or not. Cooledit Pro does tough...

In addition to one of these you might look at some beat/track tools etc like hmm Fruity Loops or something like that as Cooledit Pro (or Soundforge) are only sound/track editors and you can't generate a beat mix. tough Cooledit Pro does come with soundloops etc and allows snazzy tracks, and it hash beat tempo and beat splicing etc functions if you decide to make your own loops etc. (I guess you in theory could do exactly the same with Cooledit Pro as you do with Fruity Loops etc.)