I've just released a new version of CDBurnerXP. There are primarily bug fixes in this release, but we also got a localised installer. It has not yet been translated to all languages though.
The past releases had problems especially with burning MP3 files as audio disc, this release should put an end to them. However, I could only add a workaround, with the downside that all MP3 files go through some preprocessing which will take somewhat longer than before. The real solution is yet to be delivered by Numedia Soft (who are the developers of the burning library).