If you don't already have a copy of MusicMatch Jukebox, download one from musicmatch.com. The "Plus" version has more features and burns CDs faster, but the free version works just fine for converting files
1. Install music match box and then restart your computer if it asks
2. open music matchbox and click file convert files
3. in the bottom right hand corner called 'destination type' change it to mp3 pro.
4.you can edit the bitrate but the higher the bitrate the bigger the size
5. choose the songs you want to convert and click start