Issue Title (Unable to load ffmpeg Binaries)

Hello, I have the Issue that my program is not able to load the binaries, it just gives back a FileNotFoundException. I also tested the sample program and that was also not able to load the binaries either. I've tested every ffmpeg release since 4.4 up to 5.1.2 for Windows 64 Bit. I made sure that I compile for 64 Bit and checked that the DLLs exist using System.IO.File.Exists() and that told me that they exist. I've also moved my entire project from .net framework 4.8.1 to .net 6.0 to test, if that was the issue but it wasn't. And I am completely out of ideas. So I would be really thankful for help. I don't know how it could be reproduced because I have absolutely no idea, what's causing the issue in the first place.

Issue Category

[x] Not sure

Version Information

[x] NuGet Package 4.4.350

Steps to Reproduce

Don't know how it could be reproduced.

Expected Results

Expected: It loads the binaries
Reality: It just gives back a FileNotFoundException, even though the Files exist in the Location I give it.

Sample Code

XAML

            <StackPanel Grid.Row="2" Grid.Column="8" Grid.ColumnSpan="8" Background="#2f2633">
                <Slider x:Name="TimelineSlider" Margin="16.6" IsMoveToPointEnabled="True"  
                   MouseUp="TimelineSlider_MouseLeftButtonUp" MouseDown="TimelineSlider_MouseLeftButtonDown"/>
                <ffme:MediaElement x:Name="me" LoadedBehavior="Play" UnloadedBehavior="Stop" Stretch="None" 
                  MediaOpened="me_MediaOpened_1" MediaEnded="me_MediaEnded_1" Height="0" Width="0"/>
            </StackPanel>

C

MainWindow.xaml.cs----------------------------------------------------------------------------------------------------------------------------
        private async void Play_MouseDown(object sender, MouseButtonEventArgs e)
        {
            if (playstate != 1)
            {
                var filepath = new Uri(selectedfilepath);
                await me.Open(filepath);
                await me.Play();
                playstate = 1;
            }
            else
            {
                return;
            }
        }

App.xaml.cs---------------------------------------------------------------------------------------------------------------------------------------
        public App()
        {

            Unosquare.FFME.Library.FFmpegDirectory = @"c:\ffmpeg\bin" + (Environment.Is64BitProcess ? @"\x64" : string.Empty);

            Unosquare.FFME.Library.FFmpegLoadModeFlags = FFmpegLoadMode.FullFeatures;
        }

unosquare / ffmediaelement

Unable to load ffmpeg Binaries #634