diff --git a/app.go b/app.go
index c0d2d61..19037cc 100644
--- a/app.go
+++ b/app.go
@@ -73,7 +73,7 @@ func (app *App) loadCustomSources() error {
 		if newss, ok := sources.LoadableSources[csrc.Source]; !ok {
 			return fmt.Errorf("Unable to load source #%d: %q: no such source registered", id, csrc.Source)
 		} else {
-			src, err := newss.LoadSource(csrc.KV)
+			src, err := newss(csrc.KV)
 			if err != nil {
 				return fmt.Errorf("Unable to load source #%d (%s): %w", id, csrc.Source, err)
 			}
diff --git a/settings/settings.go b/settings/settings.go
index 4088f75..d8d96bb 100644
--- a/settings/settings.go
+++ b/settings/settings.go
@@ -9,8 +9,8 @@ import (
 )
 
 type CustomSource struct {
-	Source string                 `json:"src"`
-	KV     map[string]interface{} `json:"kv"`
+	Source string            `json:"src"`
+	KV     map[string]string `json:"kv"`
 }
 
 type Settings struct {
diff --git a/sources/interfaces.go b/sources/interfaces.go
index 52b0fce..9ec5b2d 100644
--- a/sources/interfaces.go
+++ b/sources/interfaces.go
@@ -1,8 +1,6 @@
 package sources
 
-import (
-	"encoding/json"
-)
+import ()
 
 var (
 	LoadableSources = map[string]LoadaleSource{}
@@ -21,17 +19,4 @@ type PlayingSource interface {
 	CurrentlyPlaying() string
 }
 
-type LoadaleSource struct {
-	LoadSource       func(map[string]interface{}) (SoundSource, error)
-	Description      string
-	SourceDefinition interface{}
-}
-
-func Unmarshal(in map[string]interface{}, out interface{}) error {
-	jin, err := json.Marshal(in)
-	if err != nil {
-		return err
-	}
-
-	return json.Unmarshal(jin, out)
-}
+type LoadaleSource func(map[string]string) (SoundSource, error)
diff --git a/sources/mpv/source.go b/sources/mpv/source.go
index c1826f3..38f4834 100644
--- a/sources/mpv/source.go
+++ b/sources/mpv/source.go
@@ -1,12 +1,12 @@
 package mpv
 
 import (
-	"errors"
 	"fmt"
 	"log"
 	"os"
 	"os/exec"
 	"path"
+	"strings"
 	"time"
 
 	"github.com/DexterLB/mpvipc"
@@ -17,23 +17,31 @@ import (
 type MPVSource struct {
 	process      *exec.Cmd
 	ipcSocketDir string
-	Name         string   `json:"name"`
-	Options      []string `json:"opts"`
-	File         string   `json:"file"`
+	Name         string
+	Options      []string
+	File         string
 }
 
 func init() {
-	sources.LoadableSources["mpv"] = sources.LoadaleSource{
-		LoadSource:       NewMPVSource,
-		Description:      "Play any file, stream or URL through mpv",
-		SourceDefinition: &MPVSource{},
-	}
+	sources.LoadableSources["mpv"] = NewMPVSource
 }
 
-func NewMPVSource(kv map[string]interface{}) (sources.SoundSource, error) {
+func NewMPVSource(kv map[string]string) (sources.SoundSource, error) {
 	var s MPVSource
-	err := sources.Unmarshal(kv, &s)
-	return &s, err
+
+	if name, ok := kv["name"]; ok {
+		s.Name = name
+	}
+
+	if opts, ok := kv["opts"]; ok {
+		s.Options = strings.Split(opts, " ")
+	}
+
+	if file, ok := kv["file"]; ok {
+		s.File = file
+	}
+
+	return &s, nil
 }
 
 func (s *MPVSource) GetName() string {
@@ -67,23 +75,13 @@ func (s *MPVSource) Enable() (err error) {
 
 	s.process = exec.Command("mpv", opts...)
 	if err = s.process.Start(); err != nil {
-		log.Println("Unable to launch mpv:", err.Error())
 		return
 	}
 
 	go func() {
 		err := s.process.Wait()
 		if err != nil {
-			var exiterr *exec.ExitError
-			if errors.As(err, &exiterr) {
-				if exiterr.ExitCode() > 0 {
-					log.Printf("mpv exited with error code = %d", exiterr.ExitCode())
-				} else {
-					log.Print("mpv exited successfully")
-				}
-			} else {
-				s.process.Process.Kill()
-			}
+			s.process.Process.Kill()
 		}
 
 		if s.ipcSocketDir != "" {
@@ -108,7 +106,6 @@ func (s *MPVSource) Enable() (err error) {
 			err = conn.Open()
 		}
 		if err != nil {
-			log.Println("Unable to connect to mpv socket:", err.Error())
 			return err
 		}
 		defer conn.Close()
@@ -123,23 +120,24 @@ func (s *MPVSource) Enable() (err error) {
 
 		err = conn.Set("pause", false)
 		if err != nil {
-			log.Println("Unable to unpause:", err.Error())
 			return err
 		}
 
 		var pfc interface{}
 		pfc, err = conn.Get("core-idle")
 
-		for err == nil && pfc.(bool) {
-			time.Sleep(250 * time.Millisecond)
-			pfc, err = conn.Get("core-idle")
-		}
+		if err == nil && pfc.(bool) {
+			go func() {
+				for err == nil && pfc.(bool) {
+					time.Sleep(250 * time.Millisecond)
+					pfc, err = conn.Get("core-idle")
+				}
 
-		if err != nil {
-			log.Println("Unable to retrieve core-idle status:", err.Error())
+				s.FadeIn(conn, 3, 50)
+			}()
+		} else {
+			s.FadeIn(conn, 3, 50)
 		}
-
-		s.FadeIn(conn, 3, 50)
 	}
 
 	return
diff --git a/ui/src/routes/+layout.svelte b/ui/src/routes/+layout.svelte
index fda31dd..7a51938 100644
--- a/ui/src/routes/+layout.svelte
+++ b/ui/src/routes/+layout.svelte
@@ -1,17 +1,15 @@
 <script>
- import '../hathoris.scss';
+ import '../hathoris.scss'
  import "bootstrap-icons/font/bootstrap-icons.css";
 
- import { activeSources, sources } from '$lib/stores/sources';
+ import { sources } from '$lib/stores/sources';
  sources.refresh();
  setInterval(sources.refresh, 5000);
 
- import { activeInputs, inputs } from '$lib/stores/inputs';
+ import { inputs } from '$lib/stores/inputs';
  inputs.refresh();
  setInterval(inputs.refresh, 4500);
 
- import SourceSelection from '$lib/components/SourceSelection.svelte';
-
  const version = fetch('api/version', {headers: {'Accept': 'application/json'}}).then((res) => res.json())
 </script>
 
@@ -20,50 +18,7 @@
 </svelte:head>
 
 <div class="flex-fill d-flex flex-column">
-    <div class="container-fluid flex-fill d-flex flex-column justify-content-start">
-        <div class="my-3">
-            <SourceSelection />
-        </div>
-
-        {#if $activeSources.length === 0 && $activeInputs.length === 0}
-            <div class="text-muted text-center mt-1 mb-1">
-                Aucune source active pour l'instant.
-            </div>
-        {:else}
-            <marquee>
-                {#each $activeSources as source}
-                    <div class="d-inline-block me-3">
-                        <div class="d-flex justify-content-between align-items-center">
-                            <div>
-                                {#if source.currentTitle}
-                                    <strong>{source.currentTitle}</strong> <span class="text-muted">@ {source.name}</span>
-                                {:else}
-                                    {source.name} activée
-                                {/if}
-                            </div>
-                        </div>
-                    </div>
-                {/each}
-                {#each $activeInputs as input}
-                    <div class="d-inline-block me-3">
-                        <div class="d-flex justify-content-between align-items-center">
-                            <div>
-                                {#if input.streams.length}
-                                    {#each Object.keys(input.streams) as idstream}
-                                        {@const title = input.streams[idstream]}
-                                        <strong>{title}</strong>
-                                    {/each}
-                                    <span class="text-muted">@ {input.name}</span>
-                {:else}
-                                    {input.name} activée
-                                {/if}
-                            </div>
-                        </div>
-                    </div>
-                {/each}
-            </marquee>
-        {/if}
-
+    <div class="container-fluid flex-fill d-flex flex-column justify-content-center">
         <slot></slot>
     </div>
 </div>
diff --git a/ui/src/routes/+page.svelte b/ui/src/routes/+page.svelte
index ebb741d..e3aa663 100644
--- a/ui/src/routes/+page.svelte
+++ b/ui/src/routes/+page.svelte
@@ -2,6 +2,7 @@
  import Applications from '$lib/components/Applications.svelte';
  import Inputs from '$lib/components/Inputs.svelte';
  import Mixer from '$lib/components/Mixer.svelte';
+ import SourceSelection from '$lib/components/SourceSelection.svelte';
  import { activeSources } from '$lib/stores/sources';
  import { activeInputs } from '$lib/stores/inputs';
 
@@ -9,7 +10,50 @@
  let showInactiveInputs = false;
 </script>
 
+<div class="my-3">
+    <SourceSelection />
+</div>
+
 <div class="container">
+    {#if $activeSources.length === 0 && $activeInputs.length === 0}
+        <div class="text-muted text-center mt-1 mb-1">
+            Aucune source active pour l'instant.
+        </div>
+    {:else}
+        <marquee>
+            {#each $activeSources as source}
+                <div class="d-inline-block me-3">
+                    <div class="d-flex justify-content-between align-items-center">
+                        <div>
+                            {#if source.currentTitle}
+                                <strong>{source.currentTitle}</strong> <span class="text-muted">@ {source.name}</span>
+                            {:else}
+                                {source.name} activée
+                            {/if}
+                        </div>
+                    </div>
+                </div>
+            {/each}
+            {#each $activeInputs as input}
+                <div class="d-inline-block me-3">
+                    <div class="d-flex justify-content-between align-items-center">
+                        <div>
+                            {#if input.streams.length}
+                                {#each Object.keys(input.streams) as idstream}
+                                    {@const title = input.streams[idstream]}
+                                    <strong>{title}</strong>
+                                {/each}
+                                <span class="text-muted">@ {input.name}</span>
+                            {:else}
+                                {input.name} activée
+                            {/if}
+                        </div>
+                    </div>
+                </div>
+            {/each}
+        </marquee>
+    {/if}
+
     <div class="row">
         <div class="col-md">
             <div class="card my-3">