diff --git a/lib_dec/jbm_jb4sb_fx.c b/lib_dec/jbm_jb4sb_fx.c
index 47cc52177bc451e41402ff47922c88b94d7d5a5e..56b840d1189a1aa4188aac51df30a867b595effe 100644
--- a/lib_dec/jbm_jb4sb_fx.c
+++ b/lib_dec/jbm_jb4sb_fx.c
@@ -419,10 +419,12 @@ JB4_DATAUNIT_HANDLE JB4_AllocDataUnit(
         JB4_dropFromBuffer( h );
     }
 
+    /* LOCK JBM MEMORY SLOT BEGIN */
     h->nFreeMemorySlots = (UWord16) L_sub( h->nFreeMemorySlots, 1 );
     move16();
     dataUnit = h->freeMemorySlots[h->nFreeMemorySlots];
     h->freeMemorySlots[h->nFreeMemorySlots] = NULL;
+    /* LOCK JBM MEMORY SLOT END */
     assert( dataUnit != NULL );
 
     return dataUnit;
@@ -436,8 +438,10 @@ void JB4_FreeDataUnit(
 {
     assert( dataUnit != NULL );
     assert( h->nFreeMemorySlots < MAX_JBM_SLOTS );
+    /* LOCK JBM MEMORY SLOT BEGIN */
     h->freeMemorySlots[h->nFreeMemorySlots] = dataUnit;
     h->nFreeMemorySlots = (UWord16) L_add( h->nFreeMemorySlots, 1 );
+    /* LOCK JBM MEMORY SLOT END */
     move16();
 
     return;
diff --git a/lib_util/g192.c b/lib_util/g192.c
index d6c6ec4755dc8f3b4f07ba3990389888547a31ee..f61971ef1484dea45713df0b0e6c21200cd0d24c 100644
--- a/lib_util/g192.c
+++ b/lib_util/g192.c
@@ -494,7 +494,7 @@ G192_ERROR G192_WriteVoipFrame_short(
     uint32_t ssrc = 0;
     uint16_t rtpSequenceNumber_2 = htons( rtpSequenceNumber );
     uint32_t rtpTimeStamp_2 = htonl( rtpTimeStamp );
-    uint16_t ssrc_2 = (uint16_t) htonl( ssrc );
+    uint32_t ssrc_2 = (uint32_t) htonl( ssrc );
 
     assert( numBits <= IVAS_MAX_BITS_PER_FRAME );
 
diff --git a/readme.txt b/readme.txt
index 17530b7b4b55942b9d8d773e092baae0f5488fcc..3f8a2f02c741d3d028c72b5954eed5c5e9535d06 100644
--- a/readme.txt
+++ b/readme.txt
@@ -150,6 +150,25 @@ executables are "IVAS_cod.exe", "IVAS_dec.exe", "IVAS_rend.exe", and
 "ISAR_post_rend.exe". All reside in the c-code main directory. 
 
 
+
+                       INTEGRATION AS LIBRARIES
+                       ========================
+
+While this package contains the necessary applications to execute the IVAS encoder,
+decoder, renderer and ISAR post renderer, it is envisioned that the libraries used
+would be integrated into custom applications.
+
+It should be noted that this library is not thread-safe by default. Thus, when using
+the IVAS libraries in a multi-threaded environment, proper synchronization of API
+calls is required to prevent race conditions by concurrent access to IVAS internal
+state memory, FIFO queues buffers or any other data structures. Potential mechanisms
+include e.g. mutexes, spinlocks and semaphores. The API calls are at the present not
+optimized for fine-granular locking of just critical sections. Some sensitive
+sections have thus been marked with a comment in the form /* LOCK XYZ BEGIN */ and
+/* LOCK XYZ END */ to provide guidance where code could be modified to prevent
+some potential race conditions.
+
+
                        RUNNING THE SOFTWARE
                        ====================