diff --git a/inputsource.cpp b/inputsource.cpp
index d440cba..2843c49 100644
--- a/inputsource.cpp
+++ b/inputsource.cpp
@@ -29,6 +29,8 @@
 #include <stdexcept>
 #include <algorithm>
 
+#include <QFileInfo>
+
 class ComplexF32SampleAdapter : public SampleAdapter {
 public:
     size_t sampleSize() override {
@@ -100,6 +102,21 @@ void InputSource::cleanup()
 
 void InputSource::openFile(const char *filename)
 {
+    QFileInfo fileInfo(filename);
+    const auto suffix = fileInfo.suffix();
+    if( (suffix == "cfile") || (suffix == "cf32") ) {
+        sampleAdapter = std::unique_ptr<SampleAdapter>(new ComplexF32SampleAdapter());
+    }
+    else if( suffix == "cs8" ) {
+        sampleAdapter = std::unique_ptr<SampleAdapter>(new ComplexS8SampleAdapter());
+    }
+    else if( suffix == "cu8" ) {
+        sampleAdapter = std::unique_ptr<SampleAdapter>(new ComplexU8SampleAdapter());
+    }
+    else {
+        throw std::runtime_error("Invalid file extension");
+    }
+
     FILE *file = fopen(filename, "rb");
     if (file == nullptr)
         throw std::runtime_error("Error opening file");
diff --git a/spectrogramcontrols.cpp b/spectrogramcontrols.cpp
index f6c00fc..ca2c95c 100644
--- a/spectrogramcontrols.cpp
+++ b/spectrogramcontrols.cpp
@@ -1,5 +1,6 @@
 /*
  *  Copyright (C) 2015, Mike Walters <mike@flomp.net>
+ *  Copyright (C) 2015, Jared Boone <jared@sharebrained.com>
  *
  *  This file is part of inspectrum.
  *
@@ -125,7 +126,7 @@ void SpectrogramControls::fftOrZoomChanged(int value)
 void SpectrogramControls::fileOpenButtonClicked()
 {
     QString fileName = QFileDialog::getOpenFileName(
-                           this, tr("Open File"), "", tr("Sample file (*.cfile *.bin);;All files (*)")
+                           this, tr("Open File"), "", tr("complex<float> file (*.cfile *.cf32);;complex<int8> HackRF file (*.cs8);;complex<uint8> RTL-SDR file (*.cu8);;All files (*)")
                        );
     if (!fileName.isEmpty())
         emit openFile(fileName);