As its my tape I always used to buy TDK which always had a little extra in them.... 
Good man! In that case...
Horizons - Genesis 1:41 leaving 43:19
You / I - Frost* 1:06 leaving 42:13
Left Bank Two - Wayne Hill (from The Trip 2; music used for "Vision On" gallery segment) 1:00, leaving 41:13
White Car - Yes 1:21 leaving, um, er, um, 39:52ish (cowers at thought of getting wrist slapped by TA again)
Waiting for 22 - Queensr˙che, 1:05, leaving 38:47 (Lovely distorted chorussed guitar)
Erase Today - Hüsker Dü, 1:46, leaving 37:01 (keep those ümlaüts ümlaüting...)
Isolation - Arena, 1:58, leaving 35:03
My Baby Treats Me Right 'Cos I'm A Hard Loving Man All Night Long - IQ, 1:52, leaving 33:11
Intro to something - Brom, 1:45 leaving 31:26
Dee - Ozzy Osbourne 49 seconds 30.37 left (?)
Night scented stock Kate Bush 51 seconds 29.46 left
Nevermore - Queen 1:18, 28:28 left
Amazing Grace - Steve Vai 1:52, 26:36
Eruption - Van Halen 1:42 leaving 24:54
Portsmouth - Mike Oldfield 2:00 leaving 22:54
Breathing Space - Big Big Train 1:50 leaving 21:04
Arbory Hill - UFO 1.13, leaving 19:51
Hear It - Jon Anderson 1:51, leaving 18:00 (I get the easy maths!)
Lazing on a Sunday afternoon - Queen 1:07 leaving 16:53
Fugue - Emerson, Lake & Palmer 2:00 leaving 14:53
Dreamboat Annie (Fantasy Child) Heart for anyone else who grew up in Caroline land 1.23 leaving 13.30
Tried & True - Nils Lofgren 1:59 leaving 11:31
Fitter Happier – Radiohead 1:57, leaving 9:34
Xmas intro - Frost* 1:26, leaving 8:08
Aristillus - Camel, 1:56 leaving, 6:12
The Persuaders! - John Barry (one of the best ever TV theme tunes), 1:10, leaving 5:02
Five Four Noodle - Frost* from Draroks playlist 0:42, leaving 4:20
Morning Rise - Mystery, 1:18, leaving 3:02
Constant Bloom - Moon Safari, 1:27, leaving 1:35
It Bites - Exit Song, 1:43, counting on the tape having an extra 8s available
8-)