A terrific program for transferring analog music to a PC and
editing the sound files is a free, open source program for Macs,
PCs, and UNIX platforms called Audacity, available at
http://audacity.sourceforge.net/

It has a very easy interface, but just about every tool you could
want, including tools for scratch and hiss reduction, as well as
a handy tool to alter tempos without changing pitch.  I recently
got a CD of an old organ recording where the tempo was painfully,
unlistenably slow.  Audacity let me double the tempo with no
apparent loss of fidelity, maintaining the correct pitch.  And,
did I mention it is free?

Cheers,
Roger Wiegand
Wayland, Massachusetts, USA