diff --git a/data/playback/src/commonMain/kotlin/fr/ajaury/gwenedeg/player/data/PlaybackRepositoryImpl.kt b/data/playback/src/commonMain/kotlin/fr/ajaury/gwenedeg/player/data/PlaybackRepositoryImpl.kt
index fc1ae70..cfe88f1 100644
--- a/data/playback/src/commonMain/kotlin/fr/ajaury/gwenedeg/player/data/PlaybackRepositoryImpl.kt
+++ b/data/playback/src/commonMain/kotlin/fr/ajaury/gwenedeg/player/data/PlaybackRepositoryImpl.kt
@@ -56,8 +56,8 @@ internal class PlaybackRepositoryImpl(
 
     private val playbackTiming = currentPosition.map { currentPosition ->
         PlaybackTiming(
-            positionMs = currentPosition.inWholeMilliseconds,
-            durationMs = duration.inWholeMilliseconds,
+            position = currentPosition,
+            duration = duration,
         )
     }
 
diff --git a/data/playback/src/commonMain/kotlin/fr/ajaury/gwenedeg/player/model/PlaybackTiming.kt b/data/playback/src/commonMain/kotlin/fr/ajaury/gwenedeg/player/model/PlaybackTiming.kt
index 23ad9f7..feef5db 100644
--- a/data/playback/src/commonMain/kotlin/fr/ajaury/gwenedeg/player/model/PlaybackTiming.kt
+++ b/data/playback/src/commonMain/kotlin/fr/ajaury/gwenedeg/player/model/PlaybackTiming.kt
@@ -1,9 +1,9 @@
 package fr.ajaury.gwenedeg.player.model
 
+import kotlin.time.Duration
+import kotlin.time.Duration.Companion.milliseconds
+
 data class PlaybackTiming(
-    val positionMs: Long = 0L,
-    val durationMs: Long = 0L,
-) {
-    val progress: Float
-        get() = if (durationMs > 0) (positionMs.toFloat() / durationMs).coerceIn(0f, 1f) else 0f
-}
+    val position: Duration = 0.milliseconds,
+    val duration: Duration = 0.milliseconds,
+)
diff --git a/data/subtitle/src/commonMain/kotlin/fr/ajaury/gwenedeg/subtitle/data/LrcParser.kt b/data/subtitle/src/commonMain/kotlin/fr/ajaury/gwenedeg/subtitle/data/LrcParser.kt
index b593fc2..2454290 100644
--- a/data/subtitle/src/commonMain/kotlin/fr/ajaury/gwenedeg/subtitle/data/LrcParser.kt
+++ b/data/subtitle/src/commonMain/kotlin/fr/ajaury/gwenedeg/subtitle/data/LrcParser.kt
@@ -1,6 +1,9 @@
 package fr.ajaury.gwenedeg.subtitle.data
 
+import kotlin.time.Duration
 import kotlin.time.Duration.Companion.milliseconds
+import kotlin.time.Duration.Companion.minutes
+import kotlin.time.Duration.Companion.seconds
 
 /**
  * Parses [LRC](https://en.wikipedia.org/wiki/LRC_(file_format)) subtitle content.
@@ -26,15 +29,15 @@ internal class LrcParser {
             .findAll(tags.value)
             .mapNotNull { match ->
                 TimeCodedText(
-                    startTime = match.toMs().milliseconds,
+                    startTime = match.asDuration(),
                     text = text,
                 ).takeIf { text.isNotBlank() }
             }.toList()
     }
 
-    private fun MatchResult.toMs(): Long {
+    private fun MatchResult.asDuration(): Duration {
         val (minutes, seconds, fraction) = destructured
         val fractionMs = if (fraction.length == 2) fraction.toLong() * 10 else fraction.toLong()
-        return minutes.toLong() * 60_000 + seconds.toLong() * 1_000 + fractionMs
+        return minutes.toInt().minutes + seconds.toInt().seconds + fractionMs.toInt().milliseconds
     }
 }
diff --git a/shared/src/commonMain/kotlin/fr/ajaury/gwenedeg/player/ui/PlayerControl.kt b/shared/src/commonMain/kotlin/fr/ajaury/gwenedeg/player/ui/PlayerControl.kt
index 2bc1de5..892a17e 100644
--- a/shared/src/commonMain/kotlin/fr/ajaury/gwenedeg/player/ui/PlayerControl.kt
+++ b/shared/src/commonMain/kotlin/fr/ajaury/gwenedeg/player/ui/PlayerControl.kt
@@ -20,6 +20,8 @@ import fr.ajaury.gwenedeg.player.ui.components.PreviousButton
 import fr.ajaury.gwenedeg.player.ui.components.SpeedPreferenceButton
 import fr.ajaury.gwenedeg.preferences.model.PlaybackPreferences
 import fr.ajaury.gwenedeg.theme.GwenedegTheme
+import kotlin.time.Duration
+import kotlin.time.Duration.Companion.seconds
 
 @Composable
 fun PlayerControl(
@@ -30,7 +32,7 @@ fun PlayerControl(
     canGoToNextSentence: Boolean,
     isSpeedActive: Boolean,
     playbackSpeed: Float,
-    onSeek: (Float) -> Unit = {},
+    onSeek: (Duration) -> Unit = {},
     onMainPlayActionButtonClicked: () -> Unit = {},
     onPreviousSentenceClicked: () -> Unit = {},
     onNextSentenceClicked: () -> Unit = {},
@@ -95,7 +97,7 @@ private fun PlayerControlPreview() {
     GwenedegTheme {
         PlayerControl(
             playbackState = PlaybackState.PLAYING,
-            playbackTiming = PlaybackTiming(positionMs = 1234, durationMs = 5000),
+            playbackTiming = PlaybackTiming(position = 1.2.seconds, duration = 5.seconds),
             canGoToPreviousSentence = true,
             canGoToNextSentence = true,
             isSpeedActive = false,
@@ -110,7 +112,7 @@ private fun PlayerControlFirstSentencePreview() {
     GwenedegTheme {
         PlayerControl(
             playbackState = PlaybackState.PLAYING,
-            playbackTiming = PlaybackTiming(positionMs = 1234, durationMs = 5000),
+            playbackTiming = PlaybackTiming(position = 1.2.seconds, duration = 5.seconds),
             canGoToPreviousSentence = false,
             canGoToNextSentence = true,
             playbackSpeed = PlaybackPreferences.DEFAULT_SPEED,
@@ -125,7 +127,7 @@ private fun PlayerControlActiveSpeedPreview() {
     GwenedegTheme {
         PlayerControl(
             playbackState = PlaybackState.PLAYING,
-            playbackTiming = PlaybackTiming(positionMs = 1234, durationMs = 5000),
+            playbackTiming = PlaybackTiming(position = 1.2.seconds, duration = 5.seconds),
             canGoToPreviousSentence = true,
             canGoToNextSentence = true,
             playbackSpeed = 0.7f,
@@ -140,7 +142,7 @@ private fun PlayerControlLastSentencePreview() {
     GwenedegTheme {
         PlayerControl(
             playbackState = PlaybackState.PLAYING,
-            playbackTiming = PlaybackTiming(positionMs = 1234, durationMs = 5000),
+            playbackTiming = PlaybackTiming(position = 1.2.seconds, duration = 5.seconds),
             canGoToPreviousSentence = true,
             canGoToNextSentence = false,
             playbackSpeed = PlaybackPreferences.DEFAULT_SPEED,
diff --git a/shared/src/commonMain/kotlin/fr/ajaury/gwenedeg/player/ui/PlayerScreen.kt b/shared/src/commonMain/kotlin/fr/ajaury/gwenedeg/player/ui/PlayerScreen.kt
index 1e1246a..95584fc 100644
--- a/shared/src/commonMain/kotlin/fr/ajaury/gwenedeg/player/ui/PlayerScreen.kt
+++ b/shared/src/commonMain/kotlin/fr/ajaury/gwenedeg/player/ui/PlayerScreen.kt
@@ -38,7 +38,9 @@ import fr.ajaury.gwenedeg.subtitle.model.SubtitleLine
 import fr.ajaury.gwenedeg.theme.GwenedegTheme
 import org.koin.compose.viewmodel.koinViewModel
 import org.koin.core.parameter.parametersOf
+import kotlin.time.Duration
 import kotlin.time.Duration.Companion.milliseconds
+import kotlin.time.Duration.Companion.seconds
 
 @Composable
 fun PlayerScreen(
@@ -75,7 +77,7 @@ fun PlayerScreen(
 fun PlayerScreen(
     uiState: PlayerUiState,
     onMainPlayActionButtonClicked: () -> Unit = {},
-    onSeekToTimePart: (progress: Float) -> Unit = {},
+    onSeekToTimePart: (progress: Duration) -> Unit = {},
     onSeekToSentence: (position: Int) -> Unit = {},
     onPreviousSentenceClicked: () -> Unit = {},
     onNextSentenceClicked: () -> Unit = {},
@@ -218,7 +220,7 @@ private fun PlayerScreenPlayingPreview() {
                 ),
                 playerState = PlayerState(
                     playbackState = PlaybackState.PLAYING,
-                    playbackTiming = PlaybackTiming(positionMs = 1234, durationMs = 5000),
+                    playbackTiming = PlaybackTiming(position = 1.2.seconds, duration = 5.seconds),
                     subtitleLines = previewSubtitleLines,
                     currentSubtitleIndex = 1,
                 ),
@@ -242,7 +244,7 @@ private fun PlayerScreenPausedPreview() {
                 ),
                 playerState = PlayerState(
                     playbackState = PlaybackState.PAUSED,
-                    playbackTiming = PlaybackTiming(positionMs = 1234, durationMs = 5000),
+                    playbackTiming = PlaybackTiming(position = 1.2.seconds, duration = 5.seconds),
                     subtitleLines = previewSubtitleLines,
                     currentSubtitleIndex = 1,
                 ),
@@ -266,7 +268,7 @@ private fun PlayerScreenEndedPreview() {
                 ),
                 playerState = PlayerState(
                     playbackState = PlaybackState.ENDED,
-                    playbackTiming = PlaybackTiming(positionMs = 1234, durationMs = 5000),
+                    playbackTiming = PlaybackTiming(position = 1.2.seconds, duration = 5.seconds),
                     subtitleLines = previewSubtitleLines,
                     currentSubtitleIndex = 2,
                 ),
diff --git a/shared/src/commonMain/kotlin/fr/ajaury/gwenedeg/player/ui/components/PlaybackProgress.kt b/shared/src/commonMain/kotlin/fr/ajaury/gwenedeg/player/ui/components/PlaybackProgress.kt
index 331c025..10420a7 100644
--- a/shared/src/commonMain/kotlin/fr/ajaury/gwenedeg/player/ui/components/PlaybackProgress.kt
+++ b/shared/src/commonMain/kotlin/fr/ajaury/gwenedeg/player/ui/components/PlaybackProgress.kt
@@ -11,21 +11,25 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.tooling.preview.Preview
 import fr.ajaury.gwenedeg.player.model.PlaybackTiming
 import fr.ajaury.gwenedeg.theme.GwenedegTheme
+import kotlin.time.Duration
+import kotlin.time.Duration.Companion.milliseconds
+import kotlin.time.Duration.Companion.seconds
 
 
 @Composable
 fun PlaybackProgress(
     playbackTiming: PlaybackTiming,
-    onSeek: (Float) -> Unit = {},
+    onSeek: (Duration) -> Unit = {},
 ) {
     var seekProgress by remember { mutableStateOf<Float?>(null) }
     Slider(
-        value = seekProgress ?: playbackTiming.progress,
+        value = seekProgress ?: playbackTiming.position.inWholeMilliseconds.toFloat(),
+        valueRange = 0f..playbackTiming.duration.inWholeMilliseconds.toFloat(),
         onValueChange = { seekProgress = it },
         onValueChangeFinished = {
             seekProgress?.let { fraction ->
-                if (playbackTiming.durationMs > 0) {
-                    onSeek(fraction)
+                if (playbackTiming.duration.isPositive()) {
+                    onSeek(fraction.toInt().milliseconds)
                 }
             }
             seekProgress = null
@@ -39,7 +43,7 @@ fun PlaybackProgress(
 private fun PlaybackProgressPreview() {
     GwenedegTheme {
         PlaybackProgress(
-            playbackTiming = PlaybackTiming(0, 0),
+            playbackTiming = PlaybackTiming(0.seconds, 0.seconds),
         )
     }
 }
@@ -49,7 +53,7 @@ private fun PlaybackProgressPreview() {
 private fun PlaybackProgressInProgressPreview() {
     GwenedegTheme {
         PlaybackProgress(
-            playbackTiming = PlaybackTiming(7000, 10000),
+            playbackTiming = PlaybackTiming(7.seconds, 10.seconds),
         )
     }
 }
@@ -59,7 +63,7 @@ private fun PlaybackProgressInProgressPreview() {
 private fun PlaybackProgressEndedPreview() {
     GwenedegTheme {
         PlaybackProgress(
-            playbackTiming = PlaybackTiming(10000, 10000),
+            playbackTiming = PlaybackTiming(10.seconds, 10.seconds),
         )
     }
 }
diff --git a/shared/src/commonMain/kotlin/fr/ajaury/gwenedeg/player/ui/viewmodel/PlayerUiState.kt b/shared/src/commonMain/kotlin/fr/ajaury/gwenedeg/player/ui/viewmodel/PlayerUiState.kt
index b63ec64..e2f5fba 100644
--- a/shared/src/commonMain/kotlin/fr/ajaury/gwenedeg/player/ui/viewmodel/PlayerUiState.kt
+++ b/shared/src/commonMain/kotlin/fr/ajaury/gwenedeg/player/ui/viewmodel/PlayerUiState.kt
@@ -4,6 +4,7 @@ import fr.ajaury.gwenedeg.core.model.Phrase
 import fr.ajaury.gwenedeg.player.model.PlayerState
 import fr.ajaury.gwenedeg.preferences.model.PlaybackPreferences
 import fr.ajaury.gwenedeg.preferences.model.SubtitlePreferences
+import kotlin.time.Duration.Companion.seconds
 
 data class PlayerUiState(
     val recordTitle: Phrase = Phrase(transcription = ""),
@@ -12,7 +13,7 @@ data class PlayerUiState(
     val playbackSpeed: Float = PlaybackPreferences.DEFAULT_SPEED,
 ) {
     val canGoToPreviousSentence: Boolean
-        get() = playerState.playbackTiming.positionMs > 2000
+        get() = playerState.playbackTiming.position > 2.seconds
 
     val canGoToNextSentence: Boolean
         get() = (playerState.currentSubtitleIndex ?: Int.MAX_VALUE) < playerState.subtitleLines.lastIndex
diff --git a/shared/src/commonMain/kotlin/fr/ajaury/gwenedeg/player/ui/viewmodel/PlayerViewModel.kt b/shared/src/commonMain/kotlin/fr/ajaury/gwenedeg/player/ui/viewmodel/PlayerViewModel.kt
index 244518a..3c25203 100644
--- a/shared/src/commonMain/kotlin/fr/ajaury/gwenedeg/player/ui/viewmodel/PlayerViewModel.kt
+++ b/shared/src/commonMain/kotlin/fr/ajaury/gwenedeg/player/ui/viewmodel/PlayerViewModel.kt
@@ -19,7 +19,7 @@ import kotlinx.coroutines.flow.combine
 import kotlinx.coroutines.flow.stateIn
 import kotlinx.coroutines.launch
 import kotlin.math.roundToInt
-import kotlin.time.Duration.Companion.milliseconds
+import kotlin.time.Duration
 import kotlin.time.Duration.Companion.seconds
 
 class PlayerViewModel(
@@ -89,10 +89,8 @@ class PlayerViewModel(
         }
     }
 
-    fun seekToTimePart(progress: Float) {
-        val playbackTiming = uiState.value.playerState.playbackTiming
-        val position = (progress.toDouble() * playbackTiming.durationMs).milliseconds
-        playbackRepository.seekTo(position)
+    fun seekToTimePart(progress: Duration) {
+        playbackRepository.seekTo(progress)
     }
 
     fun seekToSentence(sentenceIndex: Int) {