diff --git a/gtk2_ardour/sfdb_ui.cc b/gtk2_ardour/sfdb_ui.cc
index 6996273650..1ab1faa206 100644
--- a/gtk2_ardour/sfdb_ui.cc
+++ b/gtk2_ardour/sfdb_ui.cc
@@ -29,7 +29,6 @@
 
 #include <unistd.h>
 #include <limits.h>
-#include <sys/stat.h>
 
 #include <gtkmm/box.h>
 #include <gtkmm/stock.h>
@@ -1255,8 +1254,8 @@ SoundFileBrowser::get_paths ()
 		vector<string>::iterator i;
 
 		for (i = filenames.begin(); i != filenames.end(); ++i) {
-			struct stat buf;
-			if ((!stat((*i).c_str(), &buf)) && S_ISREG(buf.st_mode)) {
+			GStatBuf buf;
+			if ((!g_stat((*i).c_str(), &buf)) && S_ISREG(buf.st_mode)) {
 				results.push_back (*i);
 			}
 		}
@@ -1590,7 +1589,7 @@ SoundFileOmega::check_link_status (const Session* s, const vector<string>& paths
 	std::string tmpdir(Glib::build_filename (s->session_directory().sound_path(), "linktest"));
 	bool ret = false;
 
-	if (mkdir (tmpdir.c_str(), 0744)) {
+	if (g_mkdir (tmpdir.c_str(), 0744)) {
 		if (errno != EEXIST) {
 			return false;
 		}
@@ -1614,7 +1613,7 @@ SoundFileOmega::check_link_status (const Session* s, const vector<string>& paths
 	ret = true;
 
   out:
-	rmdir (tmpdir.c_str());
+	g_rmdir (tmpdir.c_str());
 	return ret;
 #endif
 }
diff --git a/libs/ardour/sndfileimportable.cc b/libs/ardour/sndfileimportable.cc
index 5ccab2c0d2..040771b143 100644
--- a/libs/ardour/sndfileimportable.cc
+++ b/libs/ardour/sndfileimportable.cc
@@ -24,6 +24,8 @@
 #include "pbd/error.h"
 #include "ardour/sndfileimportable.h"
 
+#include <glibmm/convert.h>
+
 using namespace ARDOUR;
 using namespace std;
 
@@ -68,7 +70,7 @@ SndFileImportableSource::get_timecode_info (SNDFILE* sf, SF_BROADCAST_INFO* binf
 SndFileImportableSource::SndFileImportableSource (const string& path)
 {
 	memset(&sf_info, 0 , sizeof(sf_info));
-	in.reset( sf_open(path.c_str(), SFM_READ, &sf_info), sf_close);
+	in.reset( sf_open(Glib::locale_from_utf8(path).c_str(), SFM_READ, &sf_info), sf_close);
 	if (!in) throw failed_constructor();
 
 	SF_BROADCAST_INFO binfo;
diff --git a/libs/ardour/sndfilesource.cc b/libs/ardour/sndfilesource.cc
index 5acfe7b119..07e189618e 100644
--- a/libs/ardour/sndfilesource.cc
+++ b/libs/ardour/sndfilesource.cc
@@ -28,9 +28,7 @@
 
 #include <sys/stat.h>
 
-#ifdef PLATFORM_WINDOWS
 #include <glibmm/convert.h>
-#endif
 #include <glibmm/fileutils.h>
 #include <glibmm/miscutils.h>
 
@@ -924,8 +922,8 @@ SndFileSource::get_soundfile_info (const string& path, SoundFileInfo& info, stri
 
 	sf_info.format = 0; // libsndfile says to clear this before sf_open().
 
-	if ((sf = sf_open (const_cast<char*>(path.c_str()), SFM_READ, &sf_info)) == 0) {
-		char errbuf[256];
+	if ((sf = sf_open (const_cast<char*>(Glib::locale_from_utf8(path).c_str()), SFM_READ, &sf_info)) == 0) {
+		char errbuf[1024];
 		error_msg = sf_error_str (0, errbuf, sizeof (errbuf) - 1);
 		return false;
 	}