diff --git a/.gitignore b/.gitignore
index efe3447..613dfb6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -23,3 +23,4 @@
 Icon?
 ehthumbs.db
 Thumbs.db
+xcuserdata
diff --git a/Audjustable.xcodeproj/xcuserdata/alexey.xcuserdatad/xcschemes/audjustable.xcscheme b/Audjustable.xcodeproj/xcuserdata/alexey.xcuserdatad/xcschemes/audjustable.xcscheme
deleted file mode 100644
index 9b91159..0000000
--- a/Audjustable.xcodeproj/xcuserdata/alexey.xcuserdatad/xcschemes/audjustable.xcscheme
+++ /dev/null
@@ -1,59 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<Scheme
-   LastUpgradeVersion = "0460"
-   version = "1.3">
-   <BuildAction
-      parallelizeBuildables = "YES"
-      buildImplicitDependencies = "YES">
-      <BuildActionEntries>
-         <BuildActionEntry
-            buildForTesting = "YES"
-            buildForRunning = "YES"
-            buildForProfiling = "YES"
-            buildForArchiving = "YES"
-            buildForAnalyzing = "YES">
-            <BuildableReference
-               BuildableIdentifier = "primary"
-               BlueprintIdentifier = "8AC7AD4616E55CD70069BDE7"
-               BuildableName = "libaudjustable.a"
-               BlueprintName = "audjustable"
-               ReferencedContainer = "container:Audjustable.xcodeproj">
-            </BuildableReference>
-         </BuildActionEntry>
-      </BuildActionEntries>
-   </BuildAction>
-   <TestAction
-      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
-      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      shouldUseLaunchSchemeArgsEnv = "YES"
-      buildConfiguration = "Debug">
-      <Testables>
-      </Testables>
-   </TestAction>
-   <LaunchAction
-      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
-      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      launchStyle = "0"
-      useCustomWorkingDirectory = "NO"
-      buildConfiguration = "Debug"
-      ignoresPersistentStateOnLaunch = "NO"
-      debugDocumentVersioning = "YES"
-      allowLocationSimulation = "YES">
-      <AdditionalOptions>
-      </AdditionalOptions>
-   </LaunchAction>
-   <ProfileAction
-      shouldUseLaunchSchemeArgsEnv = "YES"
-      savedToolIdentifier = ""
-      useCustomWorkingDirectory = "NO"
-      buildConfiguration = "Release"
-      debugDocumentVersioning = "YES">
-   </ProfileAction>
-   <AnalyzeAction
-      buildConfiguration = "Debug">
-   </AnalyzeAction>
-   <ArchiveAction
-      buildConfiguration = "Release"
-      revealArchiveInOrganizer = "YES">
-   </ArchiveAction>
-</Scheme>
diff --git a/Audjustable.xcodeproj/xcuserdata/alexey.xcuserdatad/xcschemes/xcschememanagement.plist b/Audjustable.xcodeproj/xcuserdata/alexey.xcuserdatad/xcschemes/xcschememanagement.plist
deleted file mode 100644
index 7eec2ce..0000000
--- a/Audjustable.xcodeproj/xcuserdata/alexey.xcuserdatad/xcschemes/xcschememanagement.plist
+++ /dev/null
@@ -1,32 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>SchemeUserState</key>
-	<dict>
-		<key>Audjustable.xcscheme</key>
-		<dict>
-			<key>orderHint</key>
-			<integer>5</integer>
-		</dict>
-		<key>audjustable.xcscheme</key>
-		<dict>
-			<key>orderHint</key>
-			<integer>6</integer>
-		</dict>
-	</dict>
-	<key>SuppressBuildableAutocreation</key>
-	<dict>
-		<key>8AC7AD4616E55CD70069BDE7</key>
-		<dict>
-			<key>primary</key>
-			<true/>
-		</dict>
-		<key>A186B4DE157F80E600BD0084</key>
-		<dict>
-			<key>primary</key>
-			<true/>
-		</dict>
-	</dict>
-</dict>
-</plist>
diff --git a/Audjustable.xcodeproj/xcuserdata/tum.xcuserdatad/xcdebugger/Breakpoints.xcbkptlist b/Audjustable.xcodeproj/xcuserdata/tum.xcuserdatad/xcdebugger/Breakpoints.xcbkptlist
deleted file mode 100644
index 8623d16..0000000
--- a/Audjustable.xcodeproj/xcuserdata/tum.xcuserdatad/xcdebugger/Breakpoints.xcbkptlist
+++ /dev/null
@@ -1,111 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<Bucket
-   type = "1"
-   version = "1.0">
-   <FileBreakpoints>
-      <FileBreakpoint
-         shouldBeEnabled = "No"
-         ignoreCount = "0"
-         continueAfterRunningActions = "No"
-         filePath = "Audjustable/Classes/AudioPlayer/AudioPlayer.m"
-         timestampString = "385569261.054532"
-         startingColumnNumber = "9223372036854775807"
-         endingColumnNumber = "9223372036854775807"
-         startingLineNumber = "500"
-         endingLineNumber = "500"
-         landmarkName = "-dataSourceFromURL:"
-         landmarkType = "5">
-      </FileBreakpoint>
-      <FileBreakpoint
-         shouldBeEnabled = "No"
-         ignoreCount = "0"
-         continueAfterRunningActions = "No"
-         filePath = "Audjustable/Classes/AudioPlayer/AudioPlayer.m"
-         timestampString = "385569314.064147"
-         startingColumnNumber = "9223372036854775807"
-         endingColumnNumber = "9223372036854775807"
-         startingLineNumber = "501"
-         endingLineNumber = "501"
-         landmarkName = "-dataSourceFromURL:"
-         landmarkType = "5">
-      </FileBreakpoint>
-      <FileBreakpoint
-         shouldBeEnabled = "No"
-         ignoreCount = "0"
-         continueAfterRunningActions = "No"
-         filePath = "Audjustable/Classes/AudioPlayer/AudioPlayer.m"
-         timestampString = "385569335.491296"
-         startingColumnNumber = "9223372036854775807"
-         endingColumnNumber = "9223372036854775807"
-         startingLineNumber = "590"
-         endingLineNumber = "590"
-         landmarkName = "-handlePropertyChangeForFileStream:fileStreamPropertyID:ioFlags:"
-         landmarkType = "5">
-      </FileBreakpoint>
-      <FileBreakpoint
-         shouldBeEnabled = "No"
-         ignoreCount = "0"
-         continueAfterRunningActions = "No"
-         filePath = "Audjustable/Classes/AudioPlayer/AudioPlayer.m"
-         timestampString = "385581540.667023"
-         startingColumnNumber = "9223372036854775807"
-         endingColumnNumber = "9223372036854775807"
-         startingLineNumber = "1791"
-         endingLineNumber = "1791"
-         landmarkName = "-dataSourceDataAvailable:"
-         landmarkType = "5">
-      </FileBreakpoint>
-      <FileBreakpoint
-         shouldBeEnabled = "No"
-         ignoreCount = "0"
-         continueAfterRunningActions = "No"
-         filePath = "Audjustable/Classes/AudioPlayer/AudioPlayer.m"
-         timestampString = "385581540.667023"
-         startingColumnNumber = "9223372036854775807"
-         endingColumnNumber = "9223372036854775807"
-         startingLineNumber = "660"
-         endingLineNumber = "660"
-         landmarkName = "-handleAudioPackets:numberBytes:numberPackets:packetDescriptions:"
-         landmarkType = "5">
-      </FileBreakpoint>
-      <FileBreakpoint
-         shouldBeEnabled = "Yes"
-         ignoreCount = "0"
-         continueAfterRunningActions = "No"
-         filePath = "Audjustable/Classes/AudioPlayer/AudioPlayer.m"
-         timestampString = "385581540.667023"
-         startingColumnNumber = "9223372036854775807"
-         endingColumnNumber = "9223372036854775807"
-         startingLineNumber = "698"
-         endingLineNumber = "698"
-         landmarkName = "-handleAudioPackets:numberBytes:numberPackets:packetDescriptions:"
-         landmarkType = "5">
-      </FileBreakpoint>
-      <FileBreakpoint
-         shouldBeEnabled = "No"
-         ignoreCount = "0"
-         continueAfterRunningActions = "No"
-         filePath = "Audjustable/Classes/AudioPlayer/AudioPlayer.m"
-         timestampString = "385581540.667023"
-         startingColumnNumber = "9223372036854775807"
-         endingColumnNumber = "9223372036854775807"
-         startingLineNumber = "697"
-         endingLineNumber = "697"
-         landmarkName = "-handleAudioPackets:numberBytes:numberPackets:packetDescriptions:"
-         landmarkType = "5">
-      </FileBreakpoint>
-      <FileBreakpoint
-         shouldBeEnabled = "No"
-         ignoreCount = "0"
-         continueAfterRunningActions = "No"
-         filePath = "Audjustable/Classes/AudioPlayer/AudioPlayer.m"
-         timestampString = "385581540.667023"
-         startingColumnNumber = "9223372036854775807"
-         endingColumnNumber = "9223372036854775807"
-         startingLineNumber = "696"
-         endingLineNumber = "696"
-         landmarkName = "-handleAudioPackets:numberBytes:numberPackets:packetDescriptions:"
-         landmarkType = "5">
-      </FileBreakpoint>
-   </FileBreakpoints>
-</Bucket>
diff --git a/Audjustable.xcodeproj/xcuserdata/tum.xcuserdatad/xcschemes/Audjustable.xcscheme b/Audjustable.xcodeproj/xcuserdata/tum.xcuserdatad/xcschemes/Audjustable.xcscheme
deleted file mode 100644
index 9b91159..0000000
--- a/Audjustable.xcodeproj/xcuserdata/tum.xcuserdatad/xcschemes/Audjustable.xcscheme
+++ /dev/null
@@ -1,59 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<Scheme
-   LastUpgradeVersion = "0460"
-   version = "1.3">
-   <BuildAction
-      parallelizeBuildables = "YES"
-      buildImplicitDependencies = "YES">
-      <BuildActionEntries>
-         <BuildActionEntry
-            buildForTesting = "YES"
-            buildForRunning = "YES"
-            buildForProfiling = "YES"
-            buildForArchiving = "YES"
-            buildForAnalyzing = "YES">
-            <BuildableReference
-               BuildableIdentifier = "primary"
-               BlueprintIdentifier = "8AC7AD4616E55CD70069BDE7"
-               BuildableName = "libaudjustable.a"
-               BlueprintName = "audjustable"
-               ReferencedContainer = "container:Audjustable.xcodeproj">
-            </BuildableReference>
-         </BuildActionEntry>
-      </BuildActionEntries>
-   </BuildAction>
-   <TestAction
-      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
-      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      shouldUseLaunchSchemeArgsEnv = "YES"
-      buildConfiguration = "Debug">
-      <Testables>
-      </Testables>
-   </TestAction>
-   <LaunchAction
-      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
-      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      launchStyle = "0"
-      useCustomWorkingDirectory = "NO"
-      buildConfiguration = "Debug"
-      ignoresPersistentStateOnLaunch = "NO"
-      debugDocumentVersioning = "YES"
-      allowLocationSimulation = "YES">
-      <AdditionalOptions>
-      </AdditionalOptions>
-   </LaunchAction>
-   <ProfileAction
-      shouldUseLaunchSchemeArgsEnv = "YES"
-      savedToolIdentifier = ""
-      useCustomWorkingDirectory = "NO"
-      buildConfiguration = "Release"
-      debugDocumentVersioning = "YES">
-   </ProfileAction>
-   <AnalyzeAction
-      buildConfiguration = "Debug">
-   </AnalyzeAction>
-   <ArchiveAction
-      buildConfiguration = "Release"
-      revealArchiveInOrganizer = "YES">
-   </ArchiveAction>
-</Scheme>
diff --git a/Audjustable.xcodeproj/xcuserdata/tum.xcuserdatad/xcschemes/xcschememanagement.plist b/Audjustable.xcodeproj/xcuserdata/tum.xcuserdatad/xcschemes/xcschememanagement.plist
deleted file mode 100644
index aa18d26..0000000
--- a/Audjustable.xcodeproj/xcuserdata/tum.xcuserdatad/xcschemes/xcschememanagement.plist
+++ /dev/null
@@ -1,32 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>SchemeUserState</key>
-	<dict>
-		<key>Audjustable.xcscheme</key>
-		<dict>
-			<key>orderHint</key>
-			<integer>0</integer>
-		</dict>
-		<key>audjustable.xcscheme</key>
-		<dict>
-			<key>orderHint</key>
-			<integer>4</integer>
-		</dict>
-	</dict>
-	<key>SuppressBuildableAutocreation</key>
-	<dict>
-		<key>8AC7AD4616E55CD70069BDE7</key>
-		<dict>
-			<key>primary</key>
-			<true/>
-		</dict>
-		<key>A186B4DE157F80E600BD0084</key>
-		<dict>
-			<key>primary</key>
-			<true/>
-		</dict>
-	</dict>
-</dict>
-</plist>