This is from the place i got the receiver http://www.ebay.com/itm/391034591794
This is the info they have on the receiver.
Audio Decoder: MPEG-1, MPEG-2 (Layer I/II), MP3, AC-3 (Dolby Digital), AAC-LC, WMA
E-AC-3 (Dolby Digital Plus) decoding HE-AAC 5.1 multi-channel decoding.