My game is very simple and usually runs at 60 fps, however calling SoundBank.GetCue() (not cue.Play() ) for a moment causes my game to stall. This happens when I'm running the game on the 360 launched by from express, if I launch it directly from the 360 the frame rate doesnt drop but I get a lot of crackling on the audio.

Can anyone help?

public static void Play(string name)
        {
            if (BuildConstants.SOUND_ON && soundbank != null)
            {
                Cue cue = soundbank.GetCue(name);
                
                if (m_cueHashset.ContainsKey(name))
                {
                    m_cueHashset.Remove(name);  
                }

                m_cueHashset.Add(name, cue);
                cue.Play();
            }
        }

You never dispose the cues when they are done playing. When you remove the cue from the hash set, make sure to also dispose it!
Also, are you calling AudioEngine.Update() often enough?

Thanks, the Dispose seems to have worked.