There is a package called " Audio cleaning lab" from a company called e-dream. you line a record player/tape deck/ c.d player into your p.c and then can remaster your records. I PERSONALLY CANNOT DO THIS. I have the package but: A) my computer did not like it when i tried and B) I don't have the technical knowledge of computers.
   However, if you are computer minded; a mate of mine has the exact package i've got and he says that it is brilliant. It burns tapes, records etc to c.d. It can take out crackles, hisses, you can add reverb/ effects but JUST DON'T ASK ME HOW TO DO IT.