A client has 1 hr of music and they want to have a consistent beat per minute rate. Some of the songs may be 120-130 beats/min and others may be 90-100 beats/min. they want them all to have the same beat rate at 110 beats/min.
I will have to speed some songs up and slow some down and then do cross fades.
You cannot apply speed changes to audio clips in Media 100 i. Generally this would be much more the job for an audio editing tool than a video editing system, since the math for changing audio pitch (and even more if you want to change the tempo but keep the pitch) is pretty complex if you want to get a good result. If you have access to ProTools, Soundtrack, Logic (or even better to a sound editor/mixer who can do that for you) you could get okay to good results.