diff --git a/config/jetscape_main.xml b/config/jetscape_main.xml
index 2b038c98..62efbedf 100644
--- a/config/jetscape_main.xml
+++ b/config/jetscape_main.xml
@@ -236,6 +236,9 @@
     <FreestreamMilne>
       <name>FreestreamMilne</name>
       <freestream_input_file>freestream_input</freestream_input_file>
+      <!-- number of timesteps for the evolution, this defines the dtau = (taus - tauj)  / ntau -->
+      <!-- in the case of <evolutionInMemory>1</evolutionInMemory> this will also set the time step for the hydro, make sure that it is small enough -->
+      <ntau>50</ntau>
     </FreestreamMilne>
 
     <NullPreDynamics> </NullPreDynamics>
@@ -296,6 +299,9 @@
       <!-- (only works for VISHNew evo files) -->
       <load_viscous_info>0</load_viscous_info>
 
+       <!-- PreEquilibrium evolution filename (plain binary format) -->
+      <PreEq_file>../examples/test_hydro_files/evolution_all_xyeta_fs.dat</PreEq_file>
+
       <!-- MUSIC hydro evolution filename (plain binary format) -->
       <!-- the associated input file specifies the grid information -->
       <MUSIC_input_file>../examples/test_hydro_files/MUSIC_input</MUSIC_input_file>
diff --git a/external_packages/get_freestream-milne.sh b/external_packages/get_freestream-milne.sh
index a5a7e94f..a248c15e 100755
--- a/external_packages/get_freestream-milne.sh
+++ b/external_packages/get_freestream-milne.sh
@@ -18,9 +18,9 @@
 #git clone --depth=1 https://github.com/derekeverett/freestream-milne.git -b time_step_history freestream-milne
 #git clone --depth=1 https://github.com/chunshen1987/freestream-milne -b time_step_history freestream-milne
 
-# using a commit from the freestream-milne repository that is compatible with X-SCAPE 1.1.1
+# using a commit from the freestream-milne repository that is compatible with X-SCAPE 1.1.5
 folderName="freestream-milne"
-commitHash="eb51fd6ff5a547f08bf817e728794dfce6177db4"
+commitHash="e0a21feb48a922b4b4541ab0e4d745c65594bb5f"
 
 git clone https://github.com/chunshen1987/freestream-milne -b time_step_history $folderName
 cd $folderName
diff --git a/external_packages/get_music.sh b/external_packages/get_music.sh
index 8a61e5e9..6459ad89 100755
--- a/external_packages/get_music.sh
+++ b/external_packages/get_music.sh
@@ -13,9 +13,10 @@
 # See COPYING for details.
 ##############################################################################
 
+
+# using a commit from the MUSIC repository that is compatible with X-SCAPE 1.1.5
 folderName="music"
-# commitHash="52b0454b0a07a76f26c8138245c0b3c54d00af65" # for xscape 1.1
-commitHash="db320898c4a9bd99ed21aa9dbb7c78e2cb0729bd" # for xscape 1.1.1
+commitHash="fdcce5d9f63fc25281eda8d498c32c69ac132dac"
 
 # download the code package
 rm -fr $folderName
diff --git a/src/preequilibrium/FreestreamMilneWrapper.cc b/src/preequilibrium/FreestreamMilneWrapper.cc
index c30db72a..0cc3413f 100644
--- a/src/preequilibrium/FreestreamMilneWrapper.cc
+++ b/src/preequilibrium/FreestreamMilneWrapper.cc
@@ -64,6 +64,26 @@ void FreestreamMilneWrapper::InitializePreequilibrium(
   params->TAU0 = tau0;
   params->TAUJ = tauj;
   params->DTAU = taus - tau0;
+
+  //settings for the grid size
+  int nx = ini->GetXSize();
+  int ny = ini->GetYSize();
+  int neta = ini->GetZSize();
+  params->DIM_X = nx;
+  params->DIM_Y = ny;
+  params->DIM_ETA = neta;
+
+  //settings for the grid step size
+  double dx = ini->GetXStep();
+  double dy = ini->GetYStep();
+  double deta = ini->GetZStep();
+  params->DX = dx;
+  params->DY = dy;
+  params->DETA = deta;
+
+  //setting for the number of time steps
+  int ntau = GetXMLElementInt({"Preequilibrium", "FreestreamMilne", "ntau"});
+  params->NT = ntau;
 }
 
 void FreestreamMilneWrapper::EvolvePreequilibrium() {