Is it wrong to download mp3 tracks?

Is it wrong to download free mp3 tracks from peer to peer file sharing sites if you already own a copy of the track? The reason I ask, Well
with a software program like cdex you can convert all your cds to mp3 but its a lot of hassle to go through them all and select different tracks from various cds.It is much quicker to download the tracks in mp3 format and burn them to disc. Well what do you think? In my mind then end result is the same.