sak2005 is it possable to get a timeline example made up?

|----|----|----|----|----|..............
0:00                    0:20............ and so on

based on the track length of an mp3?

How would I go about creating time stamps for my track in VB.net

What im doing is I have a trackbar linked to my waveform and i want to add timestamps to it every 30 secs. 

-----:30---------1:00--------1:30---------2:00----------2:30-----------3:00---------3:30-------
_________________________________IIIIIII_______________________________________________

The IIII represents my Trackbar. 

Im using this to get my maximum for the scroll

        channelTotal = Bass.BASS_StreamCreateFile(_filename, 0L, 0L, BASSFlag.BASS_SAMPLE_FLOAT Or BASSFlag.BASS_STREAM_PRESCAN)
        tbarPosition.Maximum = Convert.ToInt32(Bass.BASS_ChannelGetLength(channelTotal) / 20000)

Then in my timer im using to update the position of the trackbar

Dim pos As Long = Bass.BASS_ChannelGetPosition(_stream)
tbarPosition.Value = Convert.ToInt32(pos / 20000)

Any suggestions ?

Im using FixTimeSpan to change the Byte position into mmssf but I need to go in reverse also.
Can anyone point me in the right direction.

****Edit:I think  this is what im looking for BASS_ChannelSeconds2Bytes

I have searched but really not sure what I'm wanting to do is called, making it hard to search for it correctly.

Thanks