Running volumio in docker or virtual image

I have a smsl su8. At the end I installed virtualbox in my nas synology with the image for pc and everything is also perfect except for the sound since I can’t put the dac on usb because virtualbox won’t let me add usb. I have to solve that problem of the usb, although at the moment I was not able.

Objeto xception
(
[mensaje: protegido] => El atributo no existe
[cadena: Excepción: privada] =>
[código: protegido] => 0
[archivo: protegido] => / volumen1 / web / phpvirtualbox4dsm / endpoints / lib / vboxServiceWrappers .php
[línea: protegida] => 56
[trace: Excepción: privada] => Array
(
[0] => Array
(
[file] => /volume1/web/phpvirtualbox4dsm/endpoints/lib/vboxconnector.php
[line] => 3501
[función] => __get
[clase] => VBox_ManagedObject
[tipo] => ->
[args] => Array
(
[0] => portVersion
)

            )

        [1] => Array
            (
                [file] => /volume1/web/phpvirtualbox4dsm/endpoints/lib/vboxconnector.php
                [line] => 951
                [function] => remote_hostGetUSBDevices
                [class] => vboxconnector
                [type] => - >
                [args] => Array
                    (
                        [0] => Array
                            (
                            )

                    )

            )

        [2] => Array
            (
                [file] => /volume1/web/phpvirtualbox4dsm/endpoints/api.php
                [line] => 316
                [function] => __call
                [class] => vboxconnector
                [type] => ->
                [ args] => Array
                    (
                        [0] => hostGetUSBDevices
                        [1] => Array
                            (
                                [0] => Array
                                    (
                                    )

                                [1] => Array
                                    (
                                        [0] => Array
                                            (
                                                [data] => Array
                                                    (
                                                        [responseData] => Array
                                                            (
                                                            )

                                                    )

                                                [errores] => Array
                                                    (
                                                    )

                                                [persistir] => Array
                                                    (
                                                    )

                                                [mensajes] => Array
                                                    (
                                                    )

                                            )

                                    )

                            )

                    )

            )

    )

[anterior: Excepción: privada] =>