this issue has been resolved for me using latest versions

This looks like it's fixed in build 80.

Prior to installing 0074 (installed 0075 over it) I removed all music files/MediaMonkey folders and uninstall app (only video was left). MediaMonkey shows around 5 min track lengths when browsing files and around 17 mins when playing, stock Music Player shows correct times.

i have the same issue, track times have gone wrong. screenshot

Just as the title says. All my songs are syncing with 7 Hours added to the time...

Mine is doing the 17 minute thing (not the referenced bug of +1 hour).

Have you tried to delete MediaMonkey Folder on Device? Does any of other apps on phone see same length?

Could this be http://www.ventismedia.com/mantis/view.php?id=10177 ?

This is the MMW forum, tho.

MMA 75 thinks all tracks are around 17 minutes long. This means that using the seek bar results in the next song being started.