Your question- Can you play burnt mp3's on a cd in a std cd player...yes.... I did some tests using a master cd, a copied cd and files from the master converted(compressed)to mp3 format & burnt on a 25 cent blank cd... The sound thru the Klipsch La Scala's(all class A audio)...left some friends wondering was it live, a master or mp3 copy????... over a year latter and mp3's...hmmm My question was can these players store multiple file formats and play them?