All the MP3 files you find on EMusic.com can be played using FreeAmp.
FreeAmp plays MPEG-1 and MPEG-2 layer 2 and layer 3 audio files, including HTTP-based streams such as SHOUTcast, icecast, and RTP or RMP streams, such as Real Jutebox streams.
FreeAmp plays files created with CBR and the very latest encoding technology - VBR encoding.