1. CRTL CLICK the yellow band at the start of the audio clip (This gives you a marker).
2. CTRL CLICK the yellow band where you want the audio to fade up.
3. CLICK and DRAG the first marker down until it reads 0 (zero) decibels.
Now I am sure you can work out what to do to fade out.
COMPAQ something or other with 500Gb Boot Disk, 1Tb external Firewire Disk, 4Gb Memory and a super duper sound card, 19" TFT Monitor etc etc etc
Sony TRV33e : Sony TRV310e : Canon XM2
Sony Vegas Studio editions to v11
Remember, there is always more to learn than there is to teach.