Deal with corner case.

The hardcoded 600 will soon become a metric.

src/GameConstantsAndTypes.cpp

@@ -360,12 +360,17 @@ float DisplayBpms::GetMin() const
 }
 
 float DisplayBpms::GetMax() const
+{
+	return this->GetMaxWithin();
+}
+
+float DisplayBpms::GetMaxWithin(float highest) const
 {
 	float fMax = 0;
 	FOREACH_CONST( float, vfBpms, f )
 	{
 		if( *f != -1 )
-			fMax = max( fMax, *f );
+			fMax = clamp(max( fMax, *f ), 0, highest);
 	}
 	return fMax;
 }

src/GameConstantsAndTypes.h

@@ -4,6 +4,7 @@
 #define GAME_CONSTANTS_AND_TYPES_H
 
 #include "EnumHelper.h"
+#include <float.h> // need the max for default.
 
 // Note definitions
 /** @brief Define the mininum difficulty value allowed. */
@@ -513,6 +514,13 @@ struct DisplayBpms
 	 * @return the maximum BPM.
 	 */
 	float GetMax() const;
+	/**
+	 * @brief Retrieve the maximum BPM of the set,
+	 * but no higher than a certain value.
+	 * @param highest the highest BPM to use.
+	 * @return the maximum BPM.
+	 */
+	float GetMaxWithin(float highest = FLT_MAX) const;
 	/**
 	 * @brief Determine if the BPM is really constant.
 	 * @return Whether the BPM is constant or not.

src/Player.cpp

@@ -432,7 +432,7 @@ void Player::Init(
 		// if the BPMs are < 0, reset and get the actual values.
 		if( !bpms.IsSecret() )
 		{
-			fMaxBPM = bpms.GetMax();
+			fMaxBPM = bpms.GetMaxWithin(600);
 			fMaxBPM = max( 0, fMaxBPM );
 		}