diff --git a/app/src/test/java/xyz/cottongin/radio247/audio/Mp3FrameSyncTest.kt b/app/src/test/java/xyz/cottongin/radio247/audio/Mp3FrameSyncTest.kt
index 83c3bd4..6633adc 100644
--- a/app/src/test/java/xyz/cottongin/radio247/audio/Mp3FrameSyncTest.kt
+++ b/app/src/test/java/xyz/cottongin/radio247/audio/Mp3FrameSyncTest.kt
@@ -15,8 +15,8 @@ class Mp3FrameSyncTest {
         sampleRateIndex: Int,
         padding: Boolean
     ): ByteArray {
-        // Byte 0: sync. Byte 1: 0xF9 = sync + MPEG1(11) + LayerIII(01) + noCRC(1)
-        val byte1 = 0xF9.toByte()
+        // Byte 0: sync. Byte 1: 0xFB = sync + MPEG1(11) + LayerIII(01) + noCRC(1)
+        val byte1 = 0xFB.toByte()
         // Byte 2: bitrate(4) | sample(2) | padding(1) | private(1)
         val byte2 = ((bitrateIndex shl 4) or (sampleRateIndex shl 2) or (if (padding) 2 else 0)).toByte()
         return byteArrayOf(0xFF.toByte(), byte1, byte2, 0x00)
@@ -30,8 +30,8 @@ class Mp3FrameSyncTest {
         sampleRateIndex: Int,
         padding: Boolean
     ): ByteArray {
-        // Byte 1: 0xF5 = sync + MPEG2(10) + LayerIII(01) + noCRC(1)
-        val byte1 = 0xF5.toByte()
+        // Byte 1: 0xF3 = sync + MPEG2(10) + LayerIII(01) + noCRC(1)
+        val byte1 = 0xF3.toByte()
         val byte2 = ((bitrateIndex shl 4) or (sampleRateIndex shl 2) or (if (padding) 2 else 0)).toByte()
         return byteArrayOf(0xFF.toByte(), byte1, byte2, 0x00)
     }
@@ -61,7 +61,7 @@ class Mp3FrameSyncTest {
     @Test
     fun resyncsAfterGarbageBytes() {
         val garbage = ByteArray(100) { 0x42 }
-        val header = byteArrayOf(0xFF.toByte(), 0xF9.toByte(), 0x80.toByte(), 0x00)
+        val header = byteArrayOf(0xFF.toByte(), 0xFB.toByte(), 0x90.toByte(), 0x00)
         val bodySize = 417 - 4
         val frame = buildFrame(header, bodySize)
         // Need second frame for two-frame validation
@@ -79,8 +79,8 @@ class Mp3FrameSyncTest {
     fun calculatesFrameSizeCorrectlyForVariousBitrates() {
         // MPEG1 Layer3: 128kbps/44100Hz = 417, 192kbps/44100Hz = 626, 320kbps/44100Hz = 1044
         val configs = listOf(
-            Triple(8, 0, 417),  // 128kbps, 44100Hz
-            Triple(12, 0, 626), // 192kbps, 44100Hz
+            Triple(9, 0, 417),  // 128kbps, 44100Hz
+            Triple(11, 0, 626), // 192kbps, 44100Hz
             Triple(14, 0, 1044) // 320kbps, 44100Hz
         )
         for ((bitrateIdx, sampleIdx, expectedSize) in configs) {
@@ -94,18 +94,19 @@ class Mp3FrameSyncTest {
             val frames = mutableListOf<ByteArray>()
             Mp3FrameSync { frames.add(it) }.feed(data)
 
-            assertEquals("bitrateIndex=$bitrateIdx", 1, frames.size)
+            assertEquals("bitrateIndex=$bitrateIdx", 2, frames.size)
             assertEquals("bitrateIndex=$bitrateIdx", expectedSize, frames[0].size)
+            assertEquals("bitrateIndex=$bitrateIdx", expectedSize, frames[1].size)
         }
     }
 
     @Test
     fun handlesPaddingBit() {
-        // MPEG1 Layer3, 128kbps, 44100Hz, WITH padding → frameSize = 418. 0x92 = bitrate 8, padding.
-        val header = byteArrayOf(0xFF.toByte(), 0xF9.toByte(), 0x92.toByte(), 0x00) // padding bit set
+        // MPEG1 Layer3, 128kbps, 44100Hz, WITH padding → frameSize = 418. 0x92 = bitrate 9, padding.
+        val header = byteArrayOf(0xFF.toByte(), 0xFB.toByte(), 0x92.toByte(), 0x00) // padding bit set
         val bodySize = 418 - 4
         val frame = buildFrame(header, bodySize)
-        val nextHeader = byteArrayOf(0xFF.toByte(), 0xF9.toByte(), 0x92.toByte(), 0x00)
+        val nextHeader = byteArrayOf(0xFF.toByte(), 0xFB.toByte(), 0x92.toByte(), 0x00)
         val nextFrame = buildFrame(nextHeader, 418 - 4)
         val data = frame + nextFrame
 
@@ -118,7 +119,7 @@ class Mp3FrameSyncTest {
 
     @Test
     fun emitsCompleteFramesViaCallback() {
-        val header = buildMpeg1Layer3Header(8, 0, false)
+        val header = buildMpeg1Layer3Header(9, 0, false)
         val frame1 = buildFrame(header, 417 - 4)
         val frame2 = buildFrame(header, 417 - 4)
         val data = frame1 + frame2
@@ -133,7 +134,7 @@ class Mp3FrameSyncTest {
 
     @Test
     fun handlesTruncatedFrameAtEnd() {
-        val header = byteArrayOf(0xFF.toByte(), 0xF9.toByte(), 0x80.toByte(), 0x00)
+        val header = byteArrayOf(0xFF.toByte(), 0xFB.toByte(), 0x90.toByte(), 0x00)
         // Only half the body (413/2 ≈ 206 bytes instead of 413)
         val truncatedBody = ByteArray(206) { 0 }
         val data = header + truncatedBody
@@ -169,7 +170,7 @@ class Mp3FrameSyncTest {
 
     @Test
     fun handlesIncrementalFeeding() {
-        val header = buildMpeg1Layer3Header(8, 0, false)
+        val header = buildMpeg1Layer3Header(9, 0, false)
         val frame = buildFrame(header, 417 - 4)
         val nextFrame = buildFrame(header, 417 - 4)
         val data = frame + nextFrame
@@ -193,7 +194,7 @@ class Mp3FrameSyncTest {
     fun handlesMpeg2Frames() {
         // MPEG2 Layer3, 128kbps, 22050Hz → frameSize = (72 * 128000 / 22050) + padding
         // 72 * 128000 / 22050 = 417.95... → 417 without padding, 418 with
-        val header = buildMpeg2Layer3Header(9, 0, false) // index 9 = 128kbps for MPEG2
+        val header = buildMpeg2Layer3Header(12, 0, false) // index 12 = 128kbps for MPEG2
         val expectedSize = (72 * 128 * 1000 / 22050) // = 417
         val bodySize = expectedSize - 4
         val frame = buildFrame(header, bodySize)