Amazon.com has an audio clip of "(Last Night) I Didn't Get To Sleep At All" by The 5th Dimension on the album listed below. To listen to this clip, click on the album name and you will be taken to a CD product web page with a list of album tracks linked to song clips.
Up-Up And Away: The Definitive Collection - The 5th Dimension - Arista (2 CDs)The Amazon.com MP3 Store also has a clip of the above song on the album listed below. Click on the album name and you will be taken to a list of mp3 album tracks with audio samples that include the above song.
Ultimate 5th Dimension - The Fifth DimensionCDUniverse also has a clip of the above song on the album listed below. Click on the album name and you will be taken to a list of albums, including the one below, that include the above song. (Note: Those albums with music note icons all have song clips. To see the entire list of CDs, you may need to scroll down all the way to the bottom as many songs have lyrics and other information displayed at the top.)
Very Best Of The 5th Dimension - 5th Dimension