diff --git a/main/audio/radio_pipeline.c b/main/audio/radio_pipeline.c
index 8d2d43e..3ee0a32 100644
--- a/main/audio/radio_pipeline.c
+++ b/main/audio/radio_pipeline.c
@@ -178,6 +178,7 @@ static void decode_task(void *arg)
     uint32_t out_cap = DEC_OUT_CAP_INIT;
     uint8_t *out     = malloc(out_cap);
     bool codec_open  = false;
+    int  dec_ch      = 1;   // channels reported by the stream (1 or 2)
 
     if (!inbuf || !out || !codec) {
         ESP_LOGE(TAG, "decode buffers/codec unavailable");
@@ -225,19 +226,21 @@ static void decode_task(void *arg)
             }
             if (frame.decoded_size > 0) {
                 if (!codec_open) {
-                    // Open the codec at the rate/channels reported by the stream
-                    // on the first decoded PCM, exactly like aac_player.c.
                     esp_audio_simple_dec_info_t info = {0};
                     esp_audio_simple_dec_get_info(dec, &info);
-                    ESP_LOGI(TAG, "MP3 %" PRIu32 " Hz %u ch %u bit",
+                    dec_ch = (info.channel >= 2) ? 2 : 1;
+                    ESP_LOGI(TAG, "MP3 %" PRIu32 " Hz %u ch %u bit -> codec mono",
                              info.sample_rate, info.channel,
                              info.bits_per_sample);
-                    lisael_udp_send("RADIO: decoded MP3 %" PRIu32 " Hz %u ch %u bit -> opening codec",
-                                    info.sample_rate, info.channel, info.bits_per_sample);
+                    // Open the codec in MONO regardless of the stream: a stereo
+                    // 44.1 kHz I2S slot needs more internal DMA RAM than is free
+                    // (it fails "i2s_std_set_slot: dma descriptor"). The podcast
+                    // path works precisely because its files are mono. We downmix
+                    // stereo PCM below before writing.
                     esp_codec_dev_close(codec);
                     esp_codec_dev_sample_info_t fs = {
                         .bits_per_sample = info.bits_per_sample,
-                        .channel         = info.channel,
+                        .channel         = 1,
                         .sample_rate     = info.sample_rate,
                     };
                     esp_codec_dev_open(codec, &fs);
@@ -245,8 +248,17 @@ static void decode_task(void *arg)
                                               (float)lisael_audio_get_volume());
                     codec_open = true;
                 }
-                // Blocking write — this is what paces the whole pipeline.
-                esp_codec_dev_write(codec, frame.buffer, frame.decoded_size);
+                if (dec_ch == 2) {
+                    // Downmix interleaved 16-bit stereo to mono, in place.
+                    int16_t *pcm = (int16_t *)frame.buffer;
+                    int frames = (int)(frame.decoded_size / 4);   // 4 bytes/stereo frame
+                    for (int i = 0; i < frames; i++) {
+                        pcm[i] = (int16_t)(((int)pcm[2 * i] + (int)pcm[2 * i + 1]) / 2);
+                    }
+                    esp_codec_dev_write(codec, frame.buffer, frames * 2);
+                } else {
+                    esp_codec_dev_write(codec, frame.buffer, frame.decoded_size);
+                }
             }
             if (raw.consumed == 0 && frame.decoded_size == 0) {
                 break;  // no progress on this chunk; fetch more from the network
diff --git a/main/modes/radio.c b/main/modes/radio.c
index f202ded..05a8dfd 100644
--- a/main/modes/radio.c
+++ b/main/modes/radio.c
@@ -38,9 +38,14 @@ typedef struct {
 // listen.radioking.com mounts.
 static const radio_station_t k_stations[] = {
     // Radio Doudou — comptines & berceuses pour les tout-petits.
-    { "Radio Doudou", "https://listen.radioking.com/radio/11565/stream/22961" },
+    // Plain HTTP on purpose: the box's internal RAM is too tight to also run the
+    // mbedtls/AES handshake while streaming (TLS failed "esp-aes: alloc"). These
+    // RadioKing mounts serve identical audio over http:// (no 3xx to https).
+    { "Radio Doudou", "http://listen.radioking.com/radio/11565/stream/22961" },
     // Radio Pomme d'Api (Bayard) — la radio des 3-7 ans.
-    { "Pomme d'Api",  "https://listen.radioking.com/radio/361753/stream/411352" },
+    { "Pomme d'Api",  "http://listen.radioking.com/radio/361753/stream/411352" },
+    // SuperLoustic — la radio des enfants (chansons, génériques, histoires).
+    { "SuperLoustic", "http://radio6.pro-fhi.net/radio/9004/stream" },
 };
 
 #define K_STATIONS_COUNT ((int)(sizeof(k_stations) / sizeof(k_stations[0])))