Originally Posted by ripe
If sounds like you want to use USB MIDI.
You will need to enable USB MIDI first (standard MIDI is used by default) on the Quicksilver 303. To enable USB MIDI, go to CONFIG MODE (press FUNCTION + PATTERN CLEAR) then press the keyboard button 6 (note A). The LED above button 6 should turn on.
Now in Ableton, you should see the "Quicksilver 303" MIDI device show up in your preferences. You need to enable "Sync" output. If you want to send MIDI notes to the 303 you would need to enable "Track" output.
To send sync, you should not need to use an Ableton "External Instrument" although you could depending on how you want to route audio into an Ableton track. Also, the MIDI channel should not matter for synchronization only... it only comes into play when using MIDI notes.
Ive enabled both "Track" and "Sync" output. Made a MIDI track and drawn note in it but still no luck... this must be something stupid that im missing!!