diff --git a/pkg/container/docker.go b/pkg/container/docker.go
index bd70939..b6bca91 100644
--- a/pkg/container/docker.go
+++ b/pkg/container/docker.go
@@ -22,6 +22,7 @@ import (
 	"os"
 	"strconv"
 	"strings"
+	"syscall"
 	"time"
 
 	"github.com/docker/docker/api/types"
@@ -112,6 +113,31 @@ func (r *DockerRunner) Start(c *Container) (*ContainerStatus, error) {
 			Target: m.ContainerPath,
 		}
 	}
+	if c.Sound {
+		level.Debug(r.Logger).Log("msg", "enabling sound")
+		hostConfig.Devices = append(hostConfig.Devices, container.DeviceMapping{
+			PathOnHost:        "/dev/snd",
+			PathInContainer:   "/dev/snd",
+			CgroupPermissions: "rwm",
+		})
+		// // /dev/snd gid
+		fi, err := os.Stat("/dev/snd/seq")
+		if err != nil {
+			return nil, fmt.Errorf("couldn't stat /dev/snd: %w", err)
+		}
+		hostConfig.GroupAdd = []string{fmt.Sprintf("%d", fi.Sys().(*syscall.Stat_t).Gid)}
+		hostConfig.Mounts = append(hostConfig.Mounts, mount.Mount{
+			Type:     mount.TypeBind,
+			Source:   "/etc/group",
+			Target:   "/etc/group",
+			ReadOnly: true,
+		}, mount.Mount{
+			Type:     mount.TypeBind,
+			Source:   "/usr/share/alsa",
+			Target:   "/usr/share/alsa",
+			ReadOnly: true,
+		})
+	}
 	level.Debug(r.Logger).Log("msg", "creating container", "config", fmt.Sprintf("%#v", config), "hostConfig", fmt.Sprintf("%#v", hostConfig))
 	dc, err := r.Client.ContainerCreate(ctx, config, hostConfig, nil, nil, "")
 	if err != nil {
diff --git a/pkg/container/runner.go b/pkg/container/runner.go
index 1b7238c..e66cc10 100644
--- a/pkg/container/runner.go
+++ b/pkg/container/runner.go
@@ -97,6 +97,7 @@ type Container struct {
 	Hostname         string
 	WorkingDir       string
 	IPCMode          string
+	Sound            bool
 
 	// If true, the entrypoint of the image will be overridden. Only used for
 	// `diambra agent test`.
diff --git a/pkg/diambra/credentials.go b/pkg/diambra/credentials.go
index 8357d64..659fd58 100644
--- a/pkg/diambra/credentials.go
+++ b/pkg/diambra/credentials.go
@@ -67,9 +67,6 @@ func EnsureCredentials(logger log.Logger, credPath string) error {
 
 	if exists {
 		var err error
-		if err != nil {
-			return fmt.Errorf("couldn't create client: %w", err)
-		}
 		user, err := dc.User()
 		if err == nil {
 			level.Info(logger).Log("msg", "logged in", "user", user.Username)
diff --git a/pkg/diambra/diambra.go b/pkg/diambra/diambra.go
index 8ceb895..c9c18ec 100644
--- a/pkg/diambra/diambra.go
+++ b/pkg/diambra/diambra.go
@@ -265,6 +265,7 @@ func newEnvContainer(config *EnvConfig, envID, randomSeed int) (*container.Conta
 			container.NewBindMount(config.CredPath, "/tmp/.diambra/credentials"),
 			container.NewBindMount(config.RomsPath, "/opt/diambraArena/roms"),
 		},
+		Sound: args.Sound,
 	}
 	c.BindMounts = append(c.BindMounts, config.Mounts...)
 
@@ -276,6 +277,7 @@ func newEnvContainer(config *EnvConfig, envID, randomSeed int) (*container.Conta
 	if config.SeccompProfile != "" {
 		c.SecurityOpt = []string{"seccomp=" + config.SeccompProfile}
 	}
+
 	return c, nil
 }