Comunicación presentada en MIREX 2008 - Music Information Retrieval Evaluation eXchange, MIREX Genre Classification Contest., Philadelphia, Pennsylvania, USA (2008).The novel approach of combining audio and symbolic features for music classification from audio enhanced previous audio-only based results in MIREX 2007. We extended the approach by including temporal audio features, enhancing the polyphonic audio to MIDI transcription system and including an extended set of symbolic features. Recent research in music genre classification hints at a glass ceiling being reached using timbral audio features.This work is supported by the Austrian Academic Exchange Service (ÖAD) through the IMPACT project, the Spanish PROSEMUS project with code TIN2006-14932-C02 and the Pascal Network of Excellence