I finally found the time to finish ALSA driver for sidplay1. sidplay1 may not sound as good as sidplay2, but it's much less CPU-intensive. Playing SIDs on N810 seems to be /approximately/ as demanding as playing MPEG-audio, so sidplay should keep you entertained for several hours. Note that this is a command line -only application!
Would be quite cool (and hard) to implement SID emulation on DSP. sids are super small so in theory it could play whole tune without needing ARM cpu at all :-)
