Some tracks start and/or end abruptly with loud music
as intended. In such cases, I retain it the way it was, for "fading in" alters the original music. All I do is to ensure there are a few seconds of silence before and after the track.
But in instances when the recording starts abruptly
in the middle of the music prelude, I use "fade in" to introduce the music gradually.
Similarly, if a song ends
abruptly with the last line of the sung portion, or the music ends abruptly, I use "fade out" for a gradual tapering off, even if it means that the last few words/chords may become virtually inaudible.
When copied from audio-cassette, the "silence" before/after the song would contain 'hiss'. What I do is to delete those
recorded silent sections and insert a few seconds of silence (which of course, will be without the hiss). The silence before and after the song is a requisite. Otherwise, if we burn the track onto a CD, there will be no gap between songs.
QUOTE(priya @ Mar 14 2005, 02:52 AM)
How do U remove noise when the track starts with music and ends with it with not even a peep of isolated noise before or after.

I don't know if I've answered your question. But even when you are working with a track with no silence before/after, the process of "cleaning" would be the same --- remove pop/click, softening, filtering, etc. And at the end of it all, adding a few seconds of silence before and after the track.