From the ALSA wiki
This is the new Dell model of SB Live! According to the Creative Open Source page. The Dell CT0200 -- The new Live 5.1 card from Dell (CT0200) is not based on the EMU10K1 chip, so the EMU10K1 driver available at SourceForge won't work with it. The snd-((emu10k1)) ALSA module does not work either. Since ALSA 1.0.5, a new driver module snd-emu10k1x is introduced to support this different model.
Discussion on the ALSA mailing list regarding this new driver http://email@example.com/msg12497.html
This is new stuff, so confirmation from Dell SB Live! users required: http://firstname.lastname@example.org/msg13912.html
From the ALSA 1.0.6 changelog, MIDI support on the Dell model (EMU10k1X) is now available:
emu10k1x - added capture support - added S/PDIF support (untested) - fixed interrupt bug when playing multiple channels - split channels into separate PCMs - documented some of the registers - added support for more periods (up to 512 for playback) - formatting clean up - MIDI support - voice clean up - delayed interrupt enable/disable - playback/capture constraints added - fixed max number of periods