I'm trying to find a cd hopefully by svenne & lotta, the name of the
tune was little yellow aeroplane.  I used to have it on 45!!!! but
would really like to download or purchase on a cd due to I have no way
of switching music to cd from album or casassete. Some of the lyrics
are " I don't need my little yellow aeroplane, my rollar skates grow
rusty by the door, jimmy smith can have my old cowboy boots I'm not
going to need them anymore.  Dad don't laugh it means alot to me I'm
in love with melanie next door.  Thanks

Hello.

"Little Yellow Aeroplane" is Track #2 on a CD called "Svenne & Lotta:
Oldies But Greatest."

Listen to a clip at Amazon Germany:
http://www.amazon.de/exec/obidos/ASIN/B00002DEM1/

As for buying the CD, here are several options:

Music Stack
http://www.musicstack.com/item/376777807/svenne+_apz_+lotta/oldies+but+greatest

An eBay seller in Germany lists the CD for Euros 2.99. 
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&category=25893&item=4063390354&rd=1&ssPageName=WD2V
( I don't know where you're located, but that seller indicates that he
ships to Europe. If you're not in Europe, you might email him and ask
about shipping to your country.)

Additionally, a store in Denmark lists a copy for sale:
http://gemm.com/q.cgi?rb=FROOGLE&wild=GML676420602
Contact information for the store:
http://www.gemm.com/c/search.pl?&table=sellers&seller=GMV11292&view=CONTACT
http://www.sirich.dk/

---------
search strategy:
google: "svenne * lotta" aeroplane
various music dealers: svenne, "oldies but greatest"

I hope this helps.