Fix insert_device to select track before browser.load_item()

[ldraney]

Problem

/live/track/insert_device ignores the track index parameter. Devices load to whatever track is currently selected in Ableton's UI.

Root cause: browser.load_item() in abletonosc/track.py loads to the selected track, not the track passed to the handler.

Current workaround

Callers must select the track first:

view.set_selected_track(track_idx)
time.sleep(0.1)
track.insert_device(track_idx, "Wavetable")

Proposed fix

In abletonosc/track.py, line ~145, add track selection before load_item:

def track_insert_device(track, params: Tuple[Any]):
    device_uri = str(params[0])
    device_index = int(params[1]) if len(params) > 1 else -1
    
    # Select this track so browser.load_item targets it
    self.song.view.selected_track = track
    
    # ... existing browser.load_item code

Testing

Run from ableton-mcp-server or any song script - device should load to specified track without manual selection.

Related

• Documented in: ldraney/ableton-mcp-server TROUBLESHOOTING.md (Critical Pattern fixed socket error issue (issue no. 4) #5)
• Discovered while building: ldraney/ableton-music-development#6