GetStringPaths.cs

using FMOD.Studio;
using System.Runtime.InteropServices;

namespace FSB5BankParser
{
    public partial class MainForm
    {
        public void GetStringPaths(string BankFile)
        {
            // create the FMOD Studio system
            FMOD.Studio.System.create(out FMOD.Studio.System FMODAPISystem);
            FMODAPISystem.initialize(512, INITFLAGS.NORMAL, FMOD.INITFLAGS.NORMAL, IntPtr.Zero);
            FMODAPISystem.loadBankFile(BankFile, LOAD_BANK_FLAGS.NORMAL, out Bank FMODBank);

            if (FMODBank.getStringCount(out int count) == FMOD.RESULT.OK)
            {
                for (var i = 0; i < count; i++)
                {
                    if (FMODBank.getStringInfo(i, out FMOD.GUID FMODGUID, out string Path) == FMOD.RESULT.OK)
                    {
                        Guid GUID = ConvertFMODGuid(FMODGUID); // clean GUID, cuz FMOD API's wierd

                        // Save GUID and its corresponding path
                        FMODSystem.PathGUIDs.Add(new() 
                        { 
                            GUID = GUID,
                            Path = Path
                        });
                    }
                }
            }

            // Clean up the FMOD Studio system
            FMODBank.unload();
            FMODAPISystem.unloadAll();
            FMODAPISystem.release();

            return;

            // FMOD.GUID to System.Guid Convertor
            static Guid ConvertFMODGuid(FMOD.GUID FMODGuid)
                => MemoryMarshal.Read<Guid>(MemoryMarshal.AsBytes(MemoryMarshal.CreateReadOnlySpan(ref FMODGuid, 1)));
        }
    }
}