diff --git a/backend/playbackmanager.go b/backend/playbackmanager.go
index ac9ef47..708c449 100644
--- a/backend/playbackmanager.go
+++ b/backend/playbackmanager.go
@@ -2,7 +2,7 @@ package backend
 
 import (
 	"context"
-	"gomuse/player"
+	"supersonic/player"
 	"time"
 
 	subsonic "github.com/dweymouth/go-subsonic"
diff --git a/go.mod b/go.mod
index 6750755..9b9549e 100644
--- a/go.mod
+++ b/go.mod
@@ -1,17 +1,18 @@
-module gomuse
+module supersonic
 
 go 1.19
 
 require (
 	fyne.io/fyne/v2 v2.2.4
+	github.com/20after4/configdir v0.1.1
 	github.com/bluele/gcache v0.0.2
 	github.com/dweymouth/go-subsonic v0.0.0-20221214005741-bd8048fa1863
+	github.com/pelletier/go-toml v1.9.3
 	github.com/wildeyedskies/go-mpv v0.0.0-20221204042335-e8961dc66756
 )
 
 require (
 	fyne.io/systray v1.10.1-0.20220621085403-9a2652634e93 // indirect
-	github.com/20after4/configdir v0.1.1 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/fredbi/uri v0.0.0-20181227131451-3dcfdacbaaf3 // indirect
 	github.com/fsnotify/fsnotify v1.5.4 // indirect
@@ -39,4 +40,4 @@ require (
 	honnef.co/go/js/dom v0.0.0-20210725211120-f030747120f2 // indirect
 )
 
-replace fyne.io/fyne/v2 v2.2.4 => github.com/dweymouth/fyne/v2 v2.2.5-0.20221217035723-f7a791ca52e4
+replace fyne.io/fyne/v2 v2.2.4 => github.com/dweymouth/fyne/v2 v2.2.5-0.20221220015227-bd9b07f93ac4
diff --git a/go.sum b/go.sum
index 4ec5909..3d34b40 100644
--- a/go.sum
+++ b/go.sum
@@ -68,8 +68,8 @@ github.com/cpuguy83/go-md2man/v2 v2.0.1/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46t
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/dweymouth/fyne/v2 v2.2.5-0.20221217035723-f7a791ca52e4 h1:BoEOyrmFpJ5JsMnd/kVDFnzPE5kgXvMhK7C+f80ISMw=
-github.com/dweymouth/fyne/v2 v2.2.5-0.20221217035723-f7a791ca52e4/go.mod h1:MBoGuHzLLSXdQOWFAwWhIhYTEMp33zqtGCReSWhaQTA=
+github.com/dweymouth/fyne/v2 v2.2.5-0.20221220015227-bd9b07f93ac4 h1:Q/+eS7II+u1xjnWHXMgQ9G1pssn/Yi6BoxY6iJCVsfU=
+github.com/dweymouth/fyne/v2 v2.2.5-0.20221220015227-bd9b07f93ac4/go.mod h1:MBoGuHzLLSXdQOWFAwWhIhYTEMp33zqtGCReSWhaQTA=
 github.com/dweymouth/go-subsonic v0.0.0-20221214005741-bd8048fa1863 h1:bOWMpFJ9zY839T1EngQ5nxVCiMlatPtpGkg/yHK6szg=
 github.com/dweymouth/go-subsonic v0.0.0-20221214005741-bd8048fa1863/go.mod h1:fUez6NFiEJiQTZizZ1BThZr5GJXAbigzGYjEPNm4tdI=
 github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
@@ -236,6 +236,7 @@ github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646/go.mod h1:jpp1/29i3P1S
 github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e h1:fD57ERR4JtEqsWbfPhv4DMiApHyliiK5xCTNVSPiaAs=
 github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e/go.mod h1:zD1mROLANZcx1PVRCS0qkT7pwLkGfwJo4zjcN/Tysno=
 github.com/pascaldekloe/goe v0.0.0-20180627143212-57f6aae5913c/go.mod h1:lzWF7FIEvWOWxwDKqyGYQf6ZUaNfKdP144TG7ZOy1lc=
+github.com/pelletier/go-toml v1.9.3 h1:zeC5b1GviRUyKYd6OJPvBU/mcVDVoL1OhT17FCt5dSQ=
 github.com/pelletier/go-toml v1.9.3/go.mod h1:u1nR/EPcESfeI/szUZKdtJ0xRNbUoANCkoOuaOx1Y+c=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/sftp v1.10.1/go.mod h1:lYOWFsE0bwd1+KfKJaKeuokY15vzFx25BLbzYYoAxZI=
diff --git a/main.go b/main.go
index c4bc10b..272a128 100644
--- a/main.go
+++ b/main.go
@@ -3,28 +3,42 @@ package main
 import (
 	"context"
 	"fmt"
-	"gomuse/backend"
-	"gomuse/player"
-	"gomuse/ui"
 	"log"
 	"net/http"
+	"supersonic/backend"
+	"supersonic/player"
+	"supersonic/ui"
 
 	"fyne.io/fyne/v2"
 	"fyne.io/fyne/v2/app"
 	"fyne.io/fyne/v2/container"
+	"fyne.io/fyne/v2/layout"
 	"github.com/20after4/configdir"
 	"github.com/dweymouth/go-subsonic"
 )
 
-const appname = "gomuse"
+const (
+	appname    = "supersonic"
+	configFile = "config.toml"
+)
 
 func main() {
 	ctx, cancel := context.WithCancel(context.Background())
-	cachePath := configdir.LocalCache(appname)
-	log.Println(cachePath)
 
 	p := player.NewWithClientName(appname)
-	fmt.Println(p.Init())
+	if err := p.Init(); err != nil {
+		log.Fatalf("failed to initialize mpv player: %s", err.Error())
+	}
+
+	myApp := app.New()
+	myWindow := myApp.NewWindow(appname)
+
+	b := ui.NewBottomPanel(p)
+	c := container.NewBorder(nil, b, nil, nil, &layout.Spacer{})
+
+	myWindow.SetContent(c)
+	myWindow.Resize(fyne.NewSize(1000, 800))
+	myWindow.Show()
 
 	s := &subsonic.Client{
 		Client:     &http.Client{},
@@ -33,21 +47,16 @@ func main() {
 		ClientName: appname,
 	}
 
-	lm := backend.NewLibraryManager(s)
-	pm := backend.NewPlaybackManager(ctx, s, p)
-	im := backend.NewImageManager(s, configdir.LocalCache(appname, "covers"))
-
 	if err := s.Authenticate("***REMOVED***"); err != nil {
 		fmt.Printf("error authenticating: %v\n", err)
 	}
 
-	myApp := app.New()
-	myWindow := myApp.NewWindow(appname)
-
-	b := ui.NewBottomPanel(p, pm, im)
-	ag := ui.NewAlbumGrid(lm.RecentlyAddedIter(), pm, im)
-	c := container.NewBorder(nil, b, nil, nil, ag)
+	lm := backend.NewLibraryManager(s)
+	pm := backend.NewPlaybackManager(ctx, s, p)
+	im := backend.NewImageManager(s, configdir.LocalCache(appname, "covers"))
+	b.ImageManager = im
 
+	b.SetPlaybackManager(pm)
 	pm.OnSongChange(func(song *subsonic.Child) {
 		if song == nil {
 			myWindow.SetTitle("gomuse")
@@ -56,10 +65,8 @@ func main() {
 		myWindow.SetTitle(song.Title)
 	})
 
-	myWindow.SetContent(c)
-	myWindow.Resize(fyne.NewSize(1350, 1000))
-	myWindow.Show()
-
+	ag := ui.NewAlbumGrid(lm.RecentlyAddedIter(), pm, im)
+	myWindow.SetContent(container.NewBorder(nil, b, nil, nil, ag))
 	myApp.Run()
 	cancel()
 	p.Destroy()
diff --git a/ui/albumcard.go b/ui/albumcard.go
index b9e4b97..333316e 100644
--- a/ui/albumcard.go
+++ b/ui/albumcard.go
@@ -5,7 +5,7 @@ import (
 	"image"
 	"log"
 
-	"gomuse/ui/layout"
+	"supersonic/ui/layout"
 
 	"fyne.io/fyne/v2"
 	"fyne.io/fyne/v2/canvas"
diff --git a/ui/albumgrid.go b/ui/albumgrid.go
index 23cd7ec..5bbe986 100644
--- a/ui/albumgrid.go
+++ b/ui/albumgrid.go
@@ -2,7 +2,7 @@ package ui
 
 import (
 	"context"
-	"gomuse/backend"
+	"supersonic/backend"
 
 	"fyne.io/fyne/v2"
 	"fyne.io/fyne/v2/widget"
@@ -12,18 +12,20 @@ import (
 type AlbumGrid struct {
 	widget.BaseWidget
 
-	grid     *widget.GridWrapList
-	albums   []*subsonic.AlbumID3
-	iter     backend.AlbumIterator
-	fetching bool
-	done     bool
+	grid         *widget.GridWrapList
+	albums       []*subsonic.AlbumID3
+	iter         backend.AlbumIterator
+	imageManager *backend.ImageManager
+	fetching     bool
+	done         bool
 }
 
 var _ fyne.Widget = (*AlbumGrid)(nil)
 
 func NewAlbumGrid(iter backend.AlbumIterator, pm *backend.PlaybackManager, im *backend.ImageManager) *AlbumGrid {
 	ag := &AlbumGrid{
-		iter: iter,
+		iter:         iter,
+		imageManager: im,
 	}
 	ag.ExtendBaseWidget(ag)
 
@@ -42,38 +44,7 @@ func NewAlbumGrid(iter backend.AlbumIterator, pm *backend.PlaybackManager, im *b
 		// update func
 		func(itemID int, obj fyne.CanvasObject) {
 			ac := obj.(*AlbumCard)
-			album := ag.albums[itemID]
-			if ac.PrevAlbumID == album.ID {
-				// nothing to do
-				return
-			}
-			ac.Update(album)
-			ac.PrevAlbumID = album.ID
-			// TODO: set image to a placeholder before spinning off async fetch
-			// cancel any previous image fetch
-			if ac.ImgLoadCancel != nil {
-				ac.ImgLoadCancel()
-				ac.ImgLoadCancel = nil
-			}
-			ctx, cancel := context.WithCancel(context.Background())
-			go func(ctx context.Context) {
-				i, err := im.GetAlbumThumbnail(album.ID)
-				select {
-				case <-ctx.Done():
-					return
-				default:
-					if err == nil {
-						ac.Cover.SetImage(i)
-						ac.Refresh()
-					}
-				}
-			}(ctx)
-			ac.ImgLoadCancel = cancel
-
-			// TODO: remove magic number 10
-			if !ag.done && !ag.fetching && itemID > len(ag.albums)-10 {
-				ag.fetchMoreAlbums(10)
-			}
+			ag.doUpdateAlbumCard(itemID, ac)
 		},
 	)
 	ag.grid = g
@@ -83,7 +54,45 @@ func NewAlbumGrid(iter backend.AlbumIterator, pm *backend.PlaybackManager, im *b
 	return ag
 }
 
+func (ag *AlbumGrid) doUpdateAlbumCard(albumIdx int, ac *AlbumCard) {
+	album := ag.albums[albumIdx]
+	if ac.PrevAlbumID == album.ID {
+		// nothing to do
+		return
+	}
+	ac.Update(album)
+	ac.PrevAlbumID = album.ID
+	// TODO: set image to a placeholder before spinning off async fetch
+	// cancel any previous image fetch
+	if ac.ImgLoadCancel != nil {
+		ac.ImgLoadCancel()
+		ac.ImgLoadCancel = nil
+	}
+	ctx, cancel := context.WithCancel(context.Background())
+	go func(ctx context.Context) {
+		i, err := ag.imageManager.GetAlbumThumbnail(album.ID)
+		select {
+		case <-ctx.Done():
+			return
+		default:
+			if err == nil {
+				ac.Cover.SetImage(i)
+				ac.Refresh()
+			}
+		}
+	}(ctx)
+	ac.ImgLoadCancel = cancel
+
+	// TODO: remove magic number 10
+	if !ag.done && !ag.fetching && albumIdx > len(ag.albums)-10 {
+		ag.fetchMoreAlbums(10)
+	}
+}
+
 func (a *AlbumGrid) fetchMoreAlbums(count int) {
+	if a.iter == nil {
+		a.done = true
+	}
 	i := 0
 	a.fetching = true
 	a.iter.NextN(count, func(al *subsonic.AlbumID3) {
diff --git a/ui/bottompanel.go b/ui/bottompanel.go
index 04095f7..ce1ea2e 100644
--- a/ui/bottompanel.go
+++ b/ui/bottompanel.go
@@ -1,13 +1,15 @@
 package ui
 
 import (
-	"gomuse/backend"
-	"gomuse/player"
+	"image"
+	"supersonic/backend"
+	"supersonic/player"
 
 	"fyne.io/fyne/v2"
 	"fyne.io/fyne/v2/container"
 	"fyne.io/fyne/v2/layout"
 	"fyne.io/fyne/v2/theme"
+	"fyne.io/fyne/v2/widget"
 	"github.com/dweymouth/go-subsonic"
 )
 
@@ -48,18 +50,51 @@ func (b *bottomPanelLayout) Layout(_ []fyne.CanvasObject, size fyne.Size) {
 	}
 }
 
-func NewBottomPanel(p *player.Player, pm *backend.PlaybackManager, im *backend.ImageManager) fyne.CanvasObject {
-	n := NewNowPlayingCard()
-	c := NewPlayerControls(p, pm)
+type BottomPanel struct {
+	widget.BaseWidget
 
-	pm.OnSongChange(func(song *subsonic.Child) {
-		if song == nil {
-			n.Update("", "", "", nil)
-		} else {
-			im, _ := im.GetAlbumThumbnail(song.AlbumID)
-			n.Update(song.Title, song.Artist, song.Album, im)
-		}
-	})
+	ImageManager *backend.ImageManager
 
-	return container.New(newBottomPanelLayout(500, n, c, nil), n, c)
+	playbackManager *backend.PlaybackManager
+
+	nowPlaying *NowPlayingCard
+	controls   *PlayerControls
+	container  *fyne.Container
+}
+
+var _ fyne.Widget = (*BottomPanel)(nil)
+
+func NewBottomPanel(p *player.Player) *BottomPanel {
+	bp := &BottomPanel{}
+	bp.ExtendBaseWidget(bp)
+
+	bp.nowPlaying = NewNowPlayingCard()
+	bp.controls = NewPlayerControls(p)
+
+	bp.container = container.New(newBottomPanelLayout(500, bp.nowPlaying, bp.controls, nil), bp.nowPlaying, bp.controls)
+	return bp
+}
+
+func (bp *BottomPanel) SetPlaybackManager(pm *backend.PlaybackManager) {
+	bp.playbackManager = pm
+	bp.controls.SetPlaybackManager(pm)
+	pm.OnSongChange(func(song *subsonic.Child) {
+		bp.onSongChange(song)
+	})
+}
+
+func (bp *BottomPanel) onSongChange(song *subsonic.Child) {
+	if song == nil {
+		bp.nowPlaying.Update("", "", "", nil)
+	} else {
+		var im image.Image
+		if bp.ImageManager != nil {
+			im, _ = bp.ImageManager.GetAlbumThumbnail(song.AlbumID)
+		}
+		bp.nowPlaying.Update(song.Title, song.Artist, song.Album, im)
+	}
+}
+
+func (bp *BottomPanel) CreateRenderer() fyne.WidgetRenderer {
+	return widget.NewSimpleRenderer(bp.container)
 }
diff --git a/ui/nowplayingcard.go b/ui/nowplayingcard.go
index 2d4d585..4220939 100644
--- a/ui/nowplayingcard.go
+++ b/ui/nowplayingcard.go
@@ -3,7 +3,7 @@ package ui
 import (
 	"image"
 
-	"gomuse/ui/layout"
+	"supersonic/ui/layout"
 
 	"fyne.io/fyne/v2"
 	"fyne.io/fyne/v2/canvas"
diff --git a/ui/playercontrols.go b/ui/playercontrols.go
index 1253bad..cde90b1 100644
--- a/ui/playercontrols.go
+++ b/ui/playercontrols.go
@@ -2,8 +2,8 @@ package ui
 
 import (
 	"fmt"
-	"gomuse/backend"
-	"gomuse/player"
+	"supersonic/backend"
+	"supersonic/player"
 
 	"fyne.io/fyne/v2"
 	"fyne.io/fyne/v2/container"
@@ -67,14 +67,15 @@ type PlayerControls struct {
 	container      *fyne.Container
 
 	totalTime       float64
+	player          *player.Player
 	playbackManager *backend.PlaybackManager
 }
 
 var _ fyne.Widget = (*PlayerControls)(nil)
 
 // NewPlayerControls sets up the seek bar, and transport buttons, and returns the encompassing Container.
-func NewPlayerControls(p *player.Player, pm *backend.PlaybackManager) *PlayerControls {
-	pc := &PlayerControls{playbackManager: pm}
+func NewPlayerControls(p *player.Player) *PlayerControls {
+	pc := &PlayerControls{player: p}
 	pc.ExtendBaseWidget(pc)
 
 	pc.slider = NewTrackPosSlider()
@@ -115,14 +116,19 @@ func NewPlayerControls(p *player.Player, pm *backend.PlaybackManager) *PlayerCon
 	c := container.NewBorder(nil, nil, pc.curTimeLabel, pc.totalTimeLabel, pc.slider)
 	pc.container = container.NewVBox(c, b)
 
-	pm.OnPlayTimeUpdate(func(curTime float64, totalTime float64) {
-		pc.doPlayTimeUpdate(curTime, totalTime)
-	})
-
 	return pc
 }
 
+func (pc *PlayerControls) SetPlaybackManager(pm *backend.PlaybackManager) {
+	pc.playbackManager = pm
+	pm.OnPlayTimeUpdate(func(curTime float64, totalTime float64) {
+		pc.doPlayTimeUpdate(curTime, totalTime)
+	})
+}
+
 func (pc *PlayerControls) doPlayTimeUpdate(curTime, totalTime float64) {
+	// TODO: there is a bug with very long tracks (~20min) where the
+	// curtime label will bounce back and forth +- 1sec (rounding issue?)
 	pc.totalTime = totalTime
 	if !pc.playbackManager.IsSeeking() {
 		v := 0.0