Xbian reboots while playing mp3

[Hexasprin]

Sorry to bother you guys, this thread seems to be related to MP3 audio format? I have a question. Recently I got an audio file titiled with .caf and I couldn't play it in VLC. So, after I searched on the internet, I read this article about caf to mp3 (http://www.videoconverterfactory.com/tips/caf-to-mp3.html). As you can see, it asks me to convert CAF to some more compatible formats like WAV and MP3. But I have no idea why after the conversion, my audio quality gets decreased, no matter what i do with the sample rate and bit rate. Is that because the .MP3 is a compression format?