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I just got done writing a whole segment about great software for you and the page I was on defaulted to some sort of Premium Subscription noitce. Completely erased everything I was going to post for you.
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Oh well, here I go again (but with less detail this time).
a) editing .wav files
Take a look at
Cool Edit Pro and
Adobe Audtion 1.5 (who recently bought out the developers of Cool Edit Pro). Great programs!!
b) using loops
Look at
Propellerheads Software for using and creating loops. Reason is a great sequencing platform that includes several VST's (a drum machine, 3 synths, 2 samplers, a loop module, 2 sequencers, several FX's, etc.). Great for creating music. Recycle is a loop development software program that allows you to edit, creat and master loops. Also a great program.
Another excellent software program for creating loops is
Fruity Loops. Very user friendly and tons of fun to use.
c) beat matching
I haven't used it, but I've heard nothing but great things about
PCDJ for beat matching.
d) burning to CD without 2 second gaps between tracks!
Not too sure about this one. I'll try and find out and let you know. If you find out before me let me know.
Also, if you plan on doing any sort of live, on the fly production you have to have
Ableton Live. It's an INCREDIBLE software program.
BTW...Sound Forge is an excellent mixing and mastering software program. Keep using it.
Hope this helps!!