diff --git a/worker/lyra_worker/registry.py b/worker/lyra_worker/registry.py
index 89cd8be..efc2c50 100644
--- a/worker/lyra_worker/registry.py
+++ b/worker/lyra_worker/registry.py
@@ -1,18 +1,21 @@
+from lyra_worker.adapters._slskd import SlskdClient
 from lyra_worker.adapters._streamrip import StreamripClient
 from lyra_worker.adapters._ytdlp import YtDlpClient
 from lyra_worker.adapters.base import SourceAdapter
 from lyra_worker.adapters.qobuz import QobuzAdapter
+from lyra_worker.adapters.soulseek import SoulseekAdapter
 from lyra_worker.adapters.youtube import YouTubeAdapter
 
 
 def build_adapters(config: dict) -> list[SourceAdapter]:
     """Real source adapters, best-tier first, filtered to those that are configured.
 
-    An adapter is included only if its health() is true (e.g. Qobuz requires
-    credentials in config). Plan 3d adds Soulseek (slskd) the same way.
+    An adapter is included only if its health() is true (Qobuz needs credentials,
+    Soulseek needs an slskd URL + API key). YouTube needs no config.
     """
     candidates: list[SourceAdapter] = [
         QobuzAdapter(StreamripClient(config)),
+        SoulseekAdapter(SlskdClient(config)),
         YouTubeAdapter(YtDlpClient()),
     ]
     return [a for a in candidates if a.health()]
diff --git a/worker/tests/test_registry.py b/worker/tests/test_registry.py
index a84f635..b0592bb 100644
--- a/worker/tests/test_registry.py
+++ b/worker/tests/test_registry.py
@@ -1,30 +1,29 @@
 from lyra_worker.adapters.qobuz import QobuzAdapter
+from lyra_worker.adapters.soulseek import SoulseekAdapter
 from lyra_worker.adapters.youtube import YouTubeAdapter
 from lyra_worker.registry import build_adapters
 
 QOBUZ_CFG = {"qobuz.email": "me@example.com", "qobuz.password": "secret"}
+SLSKD_CFG = {"slskd.url": "http://slskd:5030", "slskd.api_key": "key"}
 
 
-def test_youtube_always_present_qobuz_skipped_without_config():
-    adapters = build_adapters({})
+def test_only_youtube_without_any_config():
+    names = [a.name for a in build_adapters({})]
+    assert names == ["youtube"]  # qobuz + soulseek both gated off
+
+
+def test_soulseek_included_when_configured():
+    adapters = build_adapters(SLSKD_CFG)
     names = [a.name for a in adapters]
-    assert "youtube" in names
-    assert "qobuz" not in names  # no creds -> health() false -> excluded
+    assert "soulseek" in names and "youtube" in names
+    assert "qobuz" not in names
+    assert isinstance(next(a for a in adapters if a.name == "soulseek"), SoulseekAdapter)
 
 
-def test_qobuz_included_when_configured():
-    adapters = build_adapters(QOBUZ_CFG)
-    names = [a.name for a in adapters]
-    assert "qobuz" in names
-    assert "youtube" in names
-    qz = next(a for a in adapters if a.name == "qobuz")
-    yt = next(a for a in adapters if a.name == "youtube")
-    assert isinstance(qz, QobuzAdapter)
-    assert isinstance(yt, YouTubeAdapter)
-
-
-def test_adapter_names_unique_and_qobuz_first():
-    adapters = build_adapters(QOBUZ_CFG)
+def test_all_three_configured_ordered_by_tier():
+    adapters = build_adapters({**QOBUZ_CFG, **SLSKD_CFG})
     names = [a.name for a in adapters]
+    assert names == ["qobuz", "soulseek", "youtube"]  # tiers 0,1,2
     assert len(names) == len(set(names))
-    assert names[0] == "qobuz"  # tier 0 listed first
+    assert isinstance(next(a for a in adapters if a.name == "qobuz"), QobuzAdapter)
+    assert isinstance(next(a for a in adapters if a.name == "youtube"), YouTubeAdapter)