I used PowerHour2.2 from versiontracker.com. it's really easy to use and download but only works with Mac's. It plays songs directly from playlists in iTunes and you can burn CDs. You can choose either the beginning or middle 60 seconds of the song. the things i didnt like about it (I'm somewhat of a power hour CHAMP) was that it didnt keep all of the volumes the same (one song would be really quiet and the next loud as hell) and it doesnt fade in and out of songs. you can choose little sound effects to go between the songs but theyre really not the best (a quack? not going to work). i've been scouring for a better program and i'll let you kn ow if i find one!
Use IPowerHour if you have Itunes, I know it works on pc. You make a 60 song playlist then it cuts it down to 1:00 each song and you can add small sound clips inbetween songs.