K3b can convert quite some audio formats automatically for you. Just click on the files you want in the upper half (navigation area) and they will be added to your CD.
|Most distributions will not install the necessary packages by default. You need to look for a package called k3b-codecs or similar in your distributions software manager. In some cases you need to add another repository (packman for openSUSE).|
You need to prepare (convert) the music files to wav-format before K3b can handle them. There are many tools available for this on Linux (too many). We will use the Perl Audio Converter here. It integrates nicely into Dolphin.
You can give the tracks titles or import those from CDDB (a online service for track names). To do so double click on the track (lower half of the window).
Insert a blank CD-R or CD-RW disc into your cd-writer and click on Burn. In the upcomming dialog check if you like the presets and when done click on Burn. The CD will now be burned for you.