diff --git a/server/server.go b/server/server.go
index 606649e..f5059b9 100644
--- a/server/server.go
+++ b/server/server.go
@@ -108,7 +108,7 @@ func serveMediaDirectory(w http.ResponseWriter, req *http.Request) {
 		http.Error(w, "not found", http.StatusNotFound)
 		return
 	}
-	util.DoChunks(f, func (buf []byte) { w.Write(buf) })
+	util.DoChunks(f, 4, func (buf []byte) { w.Write(buf) })
 }
 
 func handleArtistAlbumPage(w http.ResponseWriter, req *http.Request) {
diff --git a/util/util.go b/util/util.go
index 79c32f6..55d3667 100644
--- a/util/util.go
+++ b/util/util.go
@@ -39,11 +39,11 @@ func Dirents(dir string) (entries []string, err error) {
 	return
 }
 
-func DoChunks(f io.Reader, fun func (buf []byte)) (err error) {
+func DoChunks(f io.Reader, kib uint, fun func (buf []byte)) (err error) {
 	err = nil
 	bytes, chunks := int64(0), int64(0)
 	r := bufio.NewReader(f)
-	buf := make([]byte, 0, 4*1024)
+	buf := make([]byte, 0, kib * 1024)
 
 	for {
 		var n int