diff --git a/votify/interface/audio.py b/votify/interface/audio.py
index 66eb2de..f4e3cbf 100644
--- a/votify/interface/audio.py
+++ b/votify/interface/audio.py
@@ -1,7 +1,6 @@
 import logging
 
 from .base import SpotifyBaseInterface
-from .constants import AAC_AUDIO_QUALITIES
 from .enums import AudioQuality
 from .exceptions import VotifyMediaAudioQualityNotAvailableException
 from .types import DecryptionKeyAv, StreamInfo, StreamInfoAv
@@ -25,7 +24,7 @@ class SpotifyAudioInterface(SpotifyBaseInterface):
         skip_pssh: bool,
     ) -> StreamInfoAv | None:
         if (
-            self.audio_quality.value not in AAC_AUDIO_QUALITIES
+            not self.audio_quality.mp4
             or self.audio_quality.premium
             and not self.api.premium_session
         ):
diff --git a/votify/interface/enums.py b/votify/interface/enums.py
index 2e7d7e7..ef46472 100644
--- a/votify/interface/enums.py
+++ b/votify/interface/enums.py
@@ -3,11 +3,11 @@ from __future__ import annotations
 from enum import Enum
 
 from .constants import (
+    AAC_AUDIO_QUALITIES,
     FORMAT_ID_MAP,
     MEDIA_RATING_STR_MAP,
     MEDIA_TYPE_STR_MAP,
     PREMIUM_AUDIO_QUALITIES,
-    AAC_AUDIO_QUALITIES,
     VORBIS_AUDIO_QUALITIES,
 )
 
@@ -54,18 +54,22 @@ class AudioQuality(Enum):
     def premium(self) -> bool:
         return self.value in PREMIUM_AUDIO_QUALITIES
 
+    @property
+    def mp4(self) -> bool:
+        return self.value in AAC_AUDIO_QUALITIES
+
     @property
     def format_id(self) -> str | None:
         return FORMAT_ID_MAP.get(self.value)
 
     @property
     def previous_quality(self) -> "AudioQuality" | None:
-        if self.value in VORBIS_AUDIO_QUALITIES:
+        if not self.mp4:
             if self.value == "vorbis-high":
                 return AudioQuality.VORBIS_MEDIUM
             elif self.value == "vorbis-medium":
                 return AudioQuality.VORBIS_LOW
-        elif self.value in AAC_AUDIO_QUALITIES:
+        else:
             if self.value == "aac-high":
                 return AudioQuality.AAC_MEDIUM
         return None