diff --git a/src/player/store.ts b/src/player/store.ts
index 32f855b..81bf158 100644
--- a/src/player/store.ts
+++ b/src/player/store.ts
@@ -118,7 +118,9 @@ export const playerModule: Module<State, any> = {
       return dispatch('play')
     },
     seek({ commit, state }, value) {
-      commit('setPosition', state.duration * value)
+      if (isFinite(state.duration)) {
+        commit('setPosition', state.duration * value)
+      }
     },
     playNext({ commit }, track) {
       commit('setNextInQueue', track)
diff --git a/src/shared/filters.ts b/src/shared/filters.ts
index bc32381..f5468b0 100644
--- a/src/shared/filters.ts
+++ b/src/shared/filters.ts
@@ -1,6 +1,9 @@
 import Vue from 'vue'
 
 Vue.filter('duration', (value: number) => {
+  if (!isFinite(value)) {
+    return '∞'
+  }
   const minutes = Math.floor(value / 60)
   const seconds = Math.floor(value % 60)
   return (minutes < 10 ? '0' : '') + minutes + ':' + (seconds < 10 ? '0' : '') + seconds